7c+3(3c+5)=-21

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Solution for 7c+3(3c+5)=-21 equation: 



7c+3(3c+5)=-21

We move all terms to the left:

7c+3(3c+5)-(-21)=0

We add all the numbers together, and all the variables

7c+3(3c+5)+21=0

We multiply parentheses

7c+9c+15+21=0

We add all the numbers together, and all the variables

16c+36=0

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

16c=-36

c=-36/16

c=-2+1/4

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