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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 19 Page 212

Recall the Distributive Property.

49x-21y-6

Practice makes perfect

We want to simplify the given expression. To do it, we will use the Distributive Property. We will distribute 7 to the terms inside the parentheses.

7(7x-3y)-6

Distribute 7

7(7x)+7(-3y)-6

Multiply

49x+(-21y)-6

Remove parentheses

49x-21y-6

The terms are not like terms, so 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