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Big Ideas Math: Modeling Real Life, Grade 7

BI

Big Ideas Math: Modeling Real Life, Grade 7 View details

3. Identifying Proportional Relationships

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Exercise 10 Page 200

Use the Division Property of Equality to eliminate the multiplication.

x = 9

Practice makes perfect

To solve the equation, we have to isolate x on one side. Using the Division Property of Equality, we will divide both sides of the equation by 8. This will eliminate the multiplication and isolate x.

8x=72

LHS * 8=RHS* 8

8x/8=72/8

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a* b/c=a/c* b

8/8* x = 72/8

Calculate quotient

1* x = 9

Identity Property of Multiplication

x = 9

Subchapter links

Try It p.196-198

Self-Assessment for Concept & Skills p.198

Self-Assessment for Problem Solving p.199

Review & Refresh p.200

Concept, Skills, & Problem Solving p.200-202