6x-12=30-x

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Solution for 6x-12=30-x equation: 



6x-12=30-x

We move all terms to the left:

6x-12-(30-x)=0

We add all the numbers together, and all the variables

6x-(-1x+30)-12=0

We get rid of parentheses

6x+1x-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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