10-5c+21=3c+7

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Solution for 10-5c+21=3c+7 equation:


Simplifying
10 + -5c + 21 = 3c + 7

Reorder the terms:
10 + 21 + -5c = 3c + 7

Combine like terms: 10 + 21 = 31
31 + -5c = 3c + 7

Reorder the terms:
31 + -5c = 7 + 3c

Solving
31 + -5c = 7 + 3c

Solving for variable 'c'.

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

Add '-3c' to each side of the equation.
31 + -5c + -3c = 7 + 3c + -3c

Combine like terms: -5c + -3c = -8c
31 + -8c = 7 + 3c + -3c

Combine like terms: 3c + -3c = 0
31 + -8c = 7 + 0
31 + -8c = 7

Add '-31' to each side of the equation.
31 + -31 + -8c = 7 + -31

Combine like terms: 31 + -31 = 0
0 + -8c = 7 + -31
-8c = 7 + -31

Combine like terms: 7 + -31 = -24
-8c = -24

Divide each side by '-8'.
c = 3

Simplifying
c = 3

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