c-(-21)=40

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Solution for c-(-21)=40 equation:


c-(-21)=40

We simplify the equation to the form, which is simple to understand 
c-(-21)=40

Remove unnecessary parentheses
c+21=40

We move all terms containing c to the left and all other terms to the right. 
+1c=+40-21

We simplify left and right side of the equation. 
+1c=+19

We divide both sides of the equation by 1 to get c. 
c=19

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