30-2x=12+7x

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



30-2x=12+7x

We move all terms to the left:

30-2x-(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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