12-x=-30-8x

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Solution for 12-x=-30-8x equation: 



12-x=-30-8x

We move all terms to the left:

12-x-(-30-8x)=0

We add all the numbers together, and all the variables

-x-(-8x-30)+12=0

We add all the numbers together, and all the variables

-1x-(-8x-30)+12=0

We get rid of parentheses

-1x+8x+30+12=0

We add all the numbers together, and all the variables

7x+42=0

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

7x=-42

x=-42/7

x=-6

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