30=4(x+3)-7x

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Solution for 30=4(x+3)-7x equation: 



30=4(x+3)-7x

We move all terms to the left:

30-(4(x+3)-7x)=0



We calculate terms in parentheses: -(4(x+3)-7x), so:

4(x+3)-7x

We add all the numbers together, and all the variables

-7x+4(x+3)

We multiply parentheses

-7x+4x+12

We add all the numbers together, and all the variables

-3x+12

Back to the equation:

-(-3x+12)



We get rid of parentheses

3x-12+30=0

We add all the numbers together, and all the variables

3x+18=0

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

3x=-18

x=-18/3

x=-6

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