31.8=6c-9

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Solution for 31.8=6c-9 equation:


Simplifying
31.8 = 6c + -9

Reorder the terms:
31.8 = -9 + 6c

Solving
31.8 = -9 + 6c

Solving for variable 'c'.

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

Add '-6c' to each side of the equation.
31.8 + -6c = -9 + 6c + -6c

Combine like terms: 6c + -6c = 0
31.8 + -6c = -9 + 0
31.8 + -6c = -9

Add '-31.8' to each side of the equation.
31.8 + -31.8 + -6c = -9 + -31.8

Combine like terms: 31.8 + -31.8 = 0.0
0.0 + -6c = -9 + -31.8
-6c = -9 + -31.8

Combine like terms: -9 + -31.8 = -40.8
-6c = -40.8

Divide each side by '-6'.
c = 6.8

Simplifying
c = 6.8

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