-18=7c+3c

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Solution for -18=7c+3c equation: 



-18=7c+3c

We move all terms to the left:

-18-(7c+3c)=0

We add all the numbers together, and all the variables

-(+10c)-18=0

We get rid of parentheses

-10c-18=0

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

-10c=18

c=18/-10

c=-1+4/5

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