97.9k views
7 votes
Solve for x.
4(x + 3) = 2x - 8

User BinariedMe
by
4.1k points

2 Answers

6 votes

Answer:

-10

Explanation:

4(x+3)=2x-8

4x+12=2x-8

Subtract 2x from both sides

2x+12=-8

Subtract 12 from both sides

2x=-20

Divide both sides by 2

2x=10

The solving process without the words:


4(x+3)=2x-8\\4x+12=2x-8\\-2x -2x \\2x+12=-8\\-12 -12\\2x=-20\\(2x)/(2) =(-20)/(2) \\x=-10

User Hendry
by
3.9k points
7 votes

Answer:

x=-2

Explanation:

4x+12=2x-8

2x+12=8

2x=-4

x=-2

User Angelo Vargas
by
4.2k points