c*2-4c=21

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Solution for c*2-4c=21 equation:


c*2-4c=21

We simplify the equation to the form, which is simple to understand 
c*2-4c=21

We move all terms containing c to the left and all other terms to the right. 
+2c-4c=+21

We simplify left and right side of the equation. 
-2c=+21

We divide both sides of the equation by -2 to get c. 
c=-10.5

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