57=7(7-x)

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Solution for 57=7(7-x) equation: 



57=7(7-x)

We move all terms to the left:

57-(7(7-x))=0

We add all the numbers together, and all the variables

-(7(-1x+7))+57=0



We calculate terms in parentheses: -(7(-1x+7)), so:

7(-1x+7)

We multiply parentheses

-7x+49

Back to the equation:

-(-7x+49)



We get rid of parentheses

7x-49+57=0

We add all the numbers together, and all the variables

7x+8=0

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

7x=-8

x=-8/7

x=-1+1/7

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