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

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



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

We move all terms to the left:

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



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

-4(7x+3)

We multiply parentheses

-28x-12

Back to the equation:

-(-28x-12)



We get rid of parentheses

-7x+28x+12+30=0

We add all the numbers together, and all the variables

21x+42=0

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

21x=-42

x=-42/21

x=-2

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