16.0k views
15 votes
-7(x+5) =21
apply the distributive property and simplify

User Arsalan
by
4.3k points

2 Answers

8 votes

Answer:-

Distributed: -7x+(-35)=21 Simplified: x=-8

Step-by-step explanation:-

Distributed:

-7(x+5)=21

(x*(-7))+(5*(-7))=21

-7x+(-35)=21

Simplified:

-7x-35=21

-7x=21+35

-7x=56

x=-8

User Hot Licks
by
5.0k points
6 votes

Answer:

x=−8

Explanation:

Step 1: Simplify both sides of the equation.

−7(x+5)=21

(−7)(x)+(−7)(5)=21(Distribute)

−7x+−35=21

−7x−35=21

Step 2: Add 35 to both sides.

−7x−35+35=21+35

−7x=56

Step 3: Divide both sides by -7.

−7x/−7 = 56/−7

x=−8

User Otterfan
by
4.9k points