5c-2c+8=21

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Solution for 5c-2c+8=21 equation: 


Simplifying
5c + -2c + 8 = 21

Reorder the terms:
8 + 5c + -2c = 21

Combine like terms: 5c + -2c = 3c
8 + 3c = 21

Solving
8 + 3c = 21

Solving for variable 'c'.

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

Add '-8' to each side of the equation.
8 + -8 + 3c = 21 + -8

Combine like terms: 8 + -8 = 0
0 + 3c = 21 + -8
3c = 21 + -8

Combine like terms: 21 + -8 = 13
3c = 13

Divide each side by '3'.
c = 4.333333333

Simplifying
c = 4.333333333

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