74.4k views
3 votes
3x+2x+7=8x+8

solve for x

User Butallmj
by
4.9k points

2 Answers

0 votes
x = - 1/3 here you go :)
or - 0.3333333333
User Joey Hagedorn
by
4.5k points
4 votes

Answer:

x =
(-1)/(3)

Explanation:

The bold side will be the "first side" and the italics will be the "second side."

3x + 2x + 7 = 8x + 8

First, you add the variables from the first side of the equal sign together.

3x + 2x = 5

Now the equation becomes: 5x + 7 = 8x + 8

Then you're going to take the 7 from the first side and subtract it from the 8 on the second side.

8 / 5 x + 1

8-7 = 1

Now the equation becomes: 5x = 8x + 1

Subtract 8x from both sides

-3x = 1

Divide both sides by -3

x =
(-1)/(3)

User Leap Bun
by
5.0k points