Question

Solve the equation for x.

9(2x + 15) = 45

A)
−10


B)
−5


C)
2


D)
10

Answer 1

Answer:

-5

Step-by-step explanation:

• 9(2x+15)=45
• 18x+135=45
• 18x=45-135
• 18x=-90
• x=-90/18
• x=-5

Answer 2

We move all terms to the left:

9(2x+15)-(45)=0

We multiply parentheses

18x+135-45=0

We add all the numbers together, and all the variables

18x+90=0

We move all terms containing x to the left, all other terms to the right

18x=-90

x=-90/18

x=-5

(Source: Geteasysolution.com)

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