-30=6x-9-7x

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Solution for -30=6x-9-7x equation: 



-30=6x-9-7x

We move all terms to the left:

-30-(6x-9-7x)=0

We add all the numbers together, and all the variables

-(-1x-9)-30=0

We get rid of parentheses

1x+9-30=0

We add all the numbers together, and all the variables

x-21=0

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

x=21

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