c-12+c=87

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Solution for c-12+c=87 equation:


Simplifying
c + -12 + c = 87

Reorder the terms:
-12 + c + c = 87

Combine like terms: c + c = 2c
-12 + 2c = 87

Solving
-12 + 2c = 87

Solving for variable 'c'.

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

Add '12' to each side of the equation.
-12 + 12 + 2c = 87 + 12

Combine like terms: -12 + 12 = 0
0 + 2c = 87 + 12
2c = 87 + 12

Combine like terms: 87 + 12 = 99
2c = 99

Divide each side by '2'.
c = 49.5

Simplifying
c = 49.5

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