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Envision Math 2.0: Grade 7, Volume 1

EM

Envision Math 2.0: Grade 7, Volume 1 View details

4. Expand Expressions

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Exercise 18 Page 212

Recall the Distributive Property.

-2.8y-7.52

Practice makes perfect

We want to simplify the given expression. To do it, we will use the Distributive Property. We will distribute 0.4 to the terms inside the parentheses.

0.4(-5-7y-13.8)

Distribute 0.4

0.4(-5)+0.4(-7y)+0.4(- 13.8)

Multiply

-2+(- 2.8y)+(- 5.52)

Remove parentheses

-2-2.8y- 5.52

CommutativePropAdd

Commutative Property of Addition

-2.8y-2- 5.52

Subtract term

-2.8y-7.52

Since -2.8y and 7.52 are not like terms, the expression cannot be simplified further.

Subchapter links

Do You Understand? p.210

Do You Know How? p.210

Practice & Problem Solving p.211-212

Assessment Practice p.212