c*3-8=31

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Solution for c*3-8=31 equation: 



c*3-8=31

We move all terms to the left:

c*3-8-(31)=0

We add all the numbers together, and all the variables

c*3-39=0

Wy multiply elements

3c-39=0

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

3c=39

c=39/3

c=13

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