-42=2.8c

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Solution for -42=2.8c equation: 



-42=2.8c

We move all terms to the left:

-42-(2.8c)=0

We add all the numbers together, and all the variables

-(+2.8c)-42=0

We get rid of parentheses

-2.8c-42=0

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

-2.8c=42

c=42/-2.8

c=-15

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