(-3)(7-c)=63

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Solution for (-3)(7-c)=63 equation: 



(-3)(7-c)=63

We move all terms to the left:

(-3)(7-c)-(63)=0

We add all the numbers together, and all the variables

(-3)(-1c+7)-63=0

We multiply parentheses ..

(+3c-21)-63=0

We add all the numbers together, and all the variables

(3c-21)-63=0

We get rid of parentheses

3c-21-63=0

We add all the numbers together, and all the variables

3c-84=0

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

3c=84

c=84/3

c=28

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