6x+12=3-x

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Solution for 6x+12=3-x equation: 



6x+12=3-x

We move all terms to the left:

6x+12-(3-x)=0

We add all the numbers together, and all the variables

6x-(-1x+3)+12=0

We get rid of parentheses

6x+1x-3+12=0

We add all the numbers together, and all the variables

7x+9=0

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

7x=-9

x=-9/7

x=-1+2/7

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