-7c-9=-8c

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Solution for -7c-9=-8c equation: 



-7c-9=-8c

We move all terms to the left:

-7c-9-(-8c)=0

We get rid of parentheses

-7c+8c-9=0

We add all the numbers together, and all the variables

c-9=0

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

c=9

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