7(1+3)-4=-3(7-7x)

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Solution for 7(1+3)-4=-3(7-7x) equation: 



7(1+3)-4=-3(7-7x)

We move all terms to the left:

7(1+3)-4-(-3(7-7x))=0

We add all the numbers together, and all the variables

-(-3(-7x+7))-4+74=0

We add all the numbers together, and all the variables

-(-3(-7x+7))+70=0



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

-3(-7x+7)

We multiply parentheses

21x-21

Back to the equation:

-(21x-21)



We get rid of parentheses

-21x+21+70=0

We add all the numbers together, and all the variables

-21x+91=0

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

-21x=-91

x=-91/-21

x=4+1/3

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