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I added the right numbers together and plugged it into the equations to find the values of each angle measure.

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We added all the angles with variables to 180, x = 9, and we plugged in 9 to find the actual angle measures, 42, 63, and 75.

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I used alternate interior angles and supplementary angles to find angle abc.

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To find the value of x, I added 47 and 63 and subtracted that from 180 to find x and to find y I added both y angles and 70 to equal 180 and got y equals 55.

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In the diagram, x and the other triangles third angle are ventricle angles causing them to be congruent. Once this is fixed the problem is solved.

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You have to do y plus y plus 70 instead and end up with y= 55.

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I used supplementary angles to aid me into the answer

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x + 47 + 63 = 180, so x = 70. To find y, you need to add x + 2y = 180, so y = 55

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The mistake was the number should have been 70 instead of 110

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The triangle is isosceles because only two of the angles in the triangle are the same.

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All the terms have to be combined because they equal 180. Then find a and replace. You will find that two angles are equal making it an isosceles triangle

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They forgot to cancel out -15 and 15 instead of keeping a 30 that was unnecessary leading to a wrong answer.

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Instead of adding both 15 and -15 to equal 30 I canceled them out and then I got a= 15 then used the angle equations and plugged in 15 and got 30, 30, and 120. Two of the angles are equal so the triangle is isosceles.

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Instead of adding both 15 and -15 to equal 30 I canceled them out and then I got a= 15 then used the angle equations and plugged in 15 and got 30, 30, and 120. Two of the angles are equal so the triangle is isosceles.

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I added all the angles of the triangle to find x and then I plugged it into the problem to get a isosceles triangle!

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After solving for x by adding all of the angles to equal 180, I solved for g and found that the error in the problem was that instead of solving for x and plugging it into g, x was their final answer.

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I found X by adding all the angles then I plugged X into every angle equation to find the angles

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I added 47 + 63 which equals 110. Then I subtracted 180 from 110 and got X=70. Then I wrote y+y+70=180. After I solved I got y=55.

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Solve for a, which ended up being a = 15, then plug into the equation to get the value of the angles. 7(15) + 15 = [120] / 3(15) - 15 = [30] / 2(15) = [30]

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All the values were added and equivalent to 180. I added like terms, subsequent to that I subtracted 50 from both sides, leading with 13x and 130. After dividing by 13 I got 10 for x. 7(10) + 1 = 71. The answer is 71

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I added up all the angles and solved for Y and X

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The error was that the original question was not fully answered, substitute x for 10 and solve.

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I had to plug in x to the equation of angle G to find out what the measure of the angle is.

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I solved for x then I plugged it into G

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The error was that the person put the angle that was congruent to 70 as 110 instead of 70. 

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I added all the angles and then solved the problem algebraically.

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I solved for x and then plugged it into each equation

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The error was when combining -39 with +3. It’s -36 not -42. Then you find x and replace for each angle.

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main error was that -15 and 15 wasn’t canceled out, resulting in a completely wrong answer

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The error is that it is only solved for x. I plugged the x value in for angle G.
(Marissa)

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(Find and Fix the Error)
Once you get x=10, you have to plug in 10 for x to find angle g.

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When combining like terms, the person didn’t combine like terms properly and added wrongly (original: -39+3=-42 | correct: -39+3=-36). Then I had to correct the rest of the problem because the number used was wrong.

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I solved for x by adding all the unknown angles and equaled them to 180. Then, I plugged the value of x into each angle equation and I found the value of each unknown angle.

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The angle that was marked as 110 degrees was incorrect, so I corrected it and solved

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I added all the angles and substituted x with 10 and got 71.

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I added all the angles up to equal 180 and solved for x, plugged in the value for x and found G
Annie