Review for 1.1-1.2

Front

What is the equation to find how many pages Ruben read on Sunday if he read 21 pages on Saturday and 37 pages in total?

Back

21 + n = 37

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Back

x = -6

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Back

n = -5

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Back

k = 8

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Back

x = -19

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Back

Subtract 21 from both sides to isolate n.

Front

What does it mean to isolate a variable in an equation?

Back

To isolate a variable means to get the variable alone on one side of the equation.

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Back

x = 7

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Back

Distribute 3, combine like terms, and then isolate x.

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Back

n = -5