3x+12=x+3

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



3x+12=x+3

We move all terms to the left:

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

We get rid of parentheses

3x-x-3+12=0

We add all the numbers together, and all the variables

2x+9=0

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

2x=-9

x=-9/2

x=-4+1/2

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