-30=3(8+x)-7(x+6)

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Solution for -30=3(8+x)-7(x+6) equation: 



-30=3(8+x)-7(x+6)

We move all terms to the left:

-30-(3(8+x)-7(x+6))=0

We add all the numbers together, and all the variables

-(3(x+8)-7(x+6))-30=0



We calculate terms in parentheses: -(3(x+8)-7(x+6)), so:

3(x+8)-7(x+6)

We multiply parentheses

3x-7x+24-42

We add all the numbers together, and all the variables

-4x-18

Back to the equation:

-(-4x-18)



We get rid of parentheses

4x+18-30=0

We add all the numbers together, and all the variables

4x-12=0

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

4x=12

x=12/4

x=3

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