2x+30=12-7x

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Solution for 2x+30=12-7x equation: 



2x+30=12-7x

We move all terms to the left:

2x+30-(12-7x)=0

We add all the numbers together, and all the variables

2x-(-7x+12)+30=0

We get rid of parentheses

2x+7x-12+30=0

We add all the numbers together, and all the variables

9x+18=0

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

9x=-18

x=-18/9

x=-2

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