-42-4c=20

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Solution for -42-4c=20 equation: 



-42-4c=20

We move all terms to the left:

-42-4c-(20)=0

We add all the numbers together, and all the variables

-4c-62=0

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

-4c=62

c=62/-4

c=-15+1/2

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