3x=-4(x-7)

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



3x=-4(x-7)

We move all terms to the left:

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



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

-4(x-7)

We multiply parentheses

-4x+28

Back to the equation:

-(-4x+28)



We get rid of parentheses

3x+4x-28=0

We add all the numbers together, and all the variables

7x-28=0

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

7x=28

x=28/7

x=4

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