7c+8=-13

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Solution for 7c+8=-13 equation: 



7c+8=-13

We move all terms to the left:

7c+8-(-13)=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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