3x+12-x=7

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



3x+12-x=7

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x+5=0

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

2x=-5

x=-5/2

x=-2+1/2

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