31=7-2c

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Solution for 31=7-2c equation: 



31=7-2c

We move all terms to the left:

31-(7-2c)=0

We add all the numbers together, and all the variables

-(-2c+7)+31=0

We get rid of parentheses

2c-7+31=0

We add all the numbers together, and all the variables

2c+24=0

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

2c=-24

c=-24/2

c=-12

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