3(x+7)-x=9

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Solution for 3(x+7)-x=9 equation: 



3(x+7)-x=9

We move all terms to the left:

3(x+7)-x-(9)=0

We add all the numbers together, and all the variables

-1x+3(x+7)-9=0

We multiply parentheses

-1x+3x+21-9=0

We add all the numbers together, and all the variables

2x+12=0

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

2x=-12

x=-12/2

x=-6

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