42-(7-7(c-8))=0

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Solution for 42-(7-7(c-8))=0 equation: 



42-(7-7(c-8))=0



We calculate terms in parentheses: -(7-7(c-8)), so:

7-7(c-8)

determiningTheFunctionDomain
-7(c-8)+7

We multiply parentheses

-7c+56+7

We add all the numbers together, and all the variables

-7c+63

Back to the equation:

-(-7c+63)



We get rid of parentheses

7c-63+42=0

We add all the numbers together, and all the variables

7c-21=0

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

7c=21

c=21/7

c=3

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