39=c-21

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Solution for 39=c-21 equation:


Simplifying
39 = c + -21

Reorder the terms:
39 = -21 + c

Solving
39 = -21 + c

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-1c' to each side of the equation.
39 + -1c = -21 + c + -1c

Combine like terms: c + -1c = 0
39 + -1c = -21 + 0
39 + -1c = -21

Add '-39' to each side of the equation.
39 + -39 + -1c = -21 + -39

Combine like terms: 39 + -39 = 0
0 + -1c = -21 + -39
-1c = -21 + -39

Combine like terms: -21 + -39 = -60
-1c = -60

Divide each side by '-1'.
c = 60

Simplifying
c = 60

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