21+3c=-4c*28

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Solution for 21+3c=-4c*28 equation: 



21+3c=-4c*28

We move all terms to the left:

21+3c-(-4c*28)=0

We get rid of parentheses

3c+4c*28+21=0

Wy multiply elements

3c+112c+21=0

We add all the numbers together, and all the variables

115c+21=0

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

115c=-21

c=-21/115

c=-21/115

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