-30=-9x+-3x

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Solution for -30=-9x+-3x equation: 



-30=-9x+-3x

We move all terms to the left:

-30-(-9x+-3x)=0

We add all the numbers together, and all the variables

-(-12x)-30=0

We get rid of parentheses

12x-30=0

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

12x=30

x=30/12

x=2+1/2

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