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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

8. Proportions and Similar Figures

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Exercise 37 Page 136

Use the Properties of Equality to solve the proportion.

-8

Practice makes perfect

To solve the proportion, we will use the Properties of Equality.

20/14=2-x/7

LHS * 7=RHS* 7

20/14 * 7 =2-x

MoveRightFacToNum

a/c* b = a* b/c

20 * 7/14=2-x

Multiply

140/14=2-x

Calculate quotient

10=2-x

LHS-2=RHS-2

8=- x

LHS * (-1)=RHS* (-1)

-8=x

Rearrange equation

x=- 8

Subchapter links

Lesson Check p.133

Standardized Test Prep p.136

Mixed Review p.136