C+21=84

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Solution for C+21=84 equation: 


Simplifying
C + 21 = 84

Reorder the terms:
21 + C = 84

Solving
21 + C = 84

Solving for variable 'C'.

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

Add '-21' to each side of the equation.
21 + -21 + C = 84 + -21

Combine like terms: 21 + -21 = 0
0 + C = 84 + -21
C = 84 + -21

Combine like terms: 84 + -21 = 63
C = 63

Simplifying
C = 63

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