21(7+c)=168

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Solution for 21(7+c)=168 equation: 



21(7+c)=168

We move all terms to the left:

21(7+c)-(168)=0

We add all the numbers together, and all the variables

21(c+7)-168=0

We multiply parentheses

21c+147-168=0

We add all the numbers together, and all the variables

21c-21=0

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

21c=21

c=21/21

c=1

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