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Some tips for working backwards are always starting from the bigger number and counting by 2’s and 10’s or making any jumps necessary to help solve the equation.

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A whole number is a number that does not contain any integers like negatives or other things like fractions and decimals. Some examples of whole numbers are 15, 50 and even 100.

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A symbol representing an unknown value that is a letter instead of a number (usually x or y). It is later decrypted and turned into a number and that is how you would solve an equation with a variable in it. Variables are most likely contained in a linear equation.

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A series of numbers, symbols and operators that are shown to represent a certain value. An expression also does not contain an equal sign though equations do.

# data[].attributes.body
A sequence of numbers that follow a certain rule, for example, increasing by 3 each time or doubling each time. Patterns could also have rules like increasing by 3 once and then doubling once which could be considered complex.