c+40=7c-84

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Solution for c+40=7c-84 equation: 



c+40=7c-84

We move all terms to the left:

c+40-(7c-84)=0

We get rid of parentheses

c-7c+84+40=0

We add all the numbers together, and all the variables

-6c+124=0

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

-6c=-124

c=-124/-6

c=20+2/3

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