3+2x=12-1x

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Solution for 3+2x=12-1x equation: 



3+2x=12-1x

We move all terms to the left:

3+2x-(12-1x)=0

We add all the numbers together, and all the variables

2x-(-1x+12)+3=0

We get rid of parentheses

2x+1x-12+3=0

We add all the numbers together, and all the variables

3x-9=0

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

3x=9

x=9/3

x=3

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