C(8,r)=56

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Solution for C(8,r)=56 equation: 



(8.C)=56

We move all terms to the left:

(8.C)-(56)=0

We add all the numbers together, and all the variables

(+8.C)-56=0

We get rid of parentheses

8.C-56=0

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

8.C=56

C=56/8.

C=7

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