3(2-c)=21

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Solution for 3(2-c)=21 equation: 



3(2-c)=21

We move all terms to the left:

3(2-c)-(21)=0

We add all the numbers together, and all the variables

3(-1c+2)-21=0

We multiply parentheses

-3c+6-21=0

We add all the numbers together, and all the variables

-3c-15=0

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

-3c=15

c=15/-3

c=-5

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