3x-x+7+12=3x+9

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Solution for 3x-x+7+12=3x+9 equation: 



3x-x+7+12=3x+9

We move all terms to the left:

3x-x+7+12-(3x+9)=0

We add all the numbers together, and all the variables

2x-(3x+9)+19=0

We get rid of parentheses

2x-3x-9+19=0

We add all the numbers together, and all the variables

-1x+10=0

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

-x=-10

x=-10/-1

x=+10

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