3x+12=1-x

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



3x+12=1-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x+1x-1+12=0

We add all the numbers together, and all the variables

4x+11=0

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

4x=-11

x=-11/4

x=-2+3/4

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