31=8c-9

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Solution for 31=8c-9 equation:


Simplifying
31 = 8c + -9

Reorder the terms:
31 = -9 + 8c

Solving
31 = -9 + 8c

Solving for variable 'c'.

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

Add '-8c' to each side of the equation.
31 + -8c = -9 + 8c + -8c

Combine like terms: 8c + -8c = 0
31 + -8c = -9 + 0
31 + -8c = -9

Add '-31' to each side of the equation.
31 + -31 + -8c = -9 + -31

Combine like terms: 31 + -31 = 0
0 + -8c = -9 + -31
-8c = -9 + -31

Combine like terms: -9 + -31 = -40
-8c = -40

Divide each side by '-8'.
c = 5

Simplifying
c = 5

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