How do you solve # 3x +9+x+2x +4 = x +14+ 3x +7#?

2 Answers
Jacobi J.
Mar 11, 2018

#x=4#

Explanation:

First, we need to combine all of our like terms on both sides. We get:

#6x+13=4x+21#

We can subtract #4x# from both sides to get:

#2x+13=21#

We can subtract #13# from both sides to get:

#2x=8#

Dividing both sides by #2#, we get:

#x=4#

So just remember, before we can start solving equations, we must combine all like terms and isolate the variable. To isolate the variable, we must undo any operation being applied to it (essentially do the inverse operation).

Perihelion
Mar 11, 2018

#x=4#

Explanation:

Collect the like terms

#6x+13=4x+21#

Subtract #4x# from both sides

#2x+13=21#

Subtract #13# from both sides

#2x=8#

divide both sides by #2#

#x=4#

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