How do you solve -2(x-4)=15?

1 Answer
Jul 13, 2015

x=7/(-2)

Explanation:

We are given -2(x-4)=15

First, let's multiply the -2 into what's inside the parenthesis:

-2(x-4)=15

-2x-4*(-2)=15

-2x+8=15

Now, let's subtract 8 from both sides:

-2x+8=15

-2x=15-8

-2x=7

Now, just divide both sides by -2

-2x=7

x=7/(-2)

Let's check and see if our answer is correct
by plugging in x=7/(-2) into -2(x-4)=15

-2(x-4)=15

-2(-7/2-4)=15

-2(-7/2-8/2)=15

-2(-15/2)=15

15=15