# data[].attributes.body
they could've just multiplied 4/9 by 2 to get the LCD which is 18. the answer would be 4x/9

# data[].attributes.body
they didn't cross multiplied they didnt swap the sides and didn't divide both sides correctly and the answer is 8

# data[].attributes.body
I think the problem is that the exercise is not simplified in the correct way because x = 8 not x = 40.5

# data[].attributes.body
In the first, the mistake they made is they did not simplify well because if they had simplified well, it would have given them x = 8

# data[].attributes.body
they has to multiply 1/2 with 5/5 and 3/5 with 2/2 giving you 5/10 and 6/10.  when adding it it would be 11/10 = x/10 multiply by 10 to cancel out the 10 and x=11.

# data[].attributes.body
wrong in the second step because you have to cross multiply so 1 times x 3 times 15 which gets you x=45

# data[].attributes.body
The person multiplied by two different numbers when canceling. They should've only multiplied by 18.

# data[].attributes.body
What is wrong here is how the numbers are multiplied because if they had done it right then correctly the answer is x = 45, not 5 = x, that's wrong.

# data[].attributes.body
You can't multiply by 15 since it's the numerator