30=-3(x-4)

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



30=-3(x-4)

We move all terms to the left:

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



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

-3(x-4)

We multiply parentheses

-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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