31.5=7c-7

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Solution for 31.5=7c-7 equation:


Simplifying
31.5 = 7c + -7

Reorder the terms:
31.5 = -7 + 7c

Solving
31.5 = -7 + 7c

Solving for variable 'c'.

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

Add '-7c' to each side of the equation.
31.5 + -7c = -7 + 7c + -7c

Combine like terms: 7c + -7c = 0
31.5 + -7c = -7 + 0
31.5 + -7c = -7

Add '-31.5' to each side of the equation.
31.5 + -31.5 + -7c = -7 + -31.5

Combine like terms: 31.5 + -31.5 = 0.0
0.0 + -7c = -7 + -31.5
-7c = -7 + -31.5

Combine like terms: -7 + -31.5 = -38.5
-7c = -38.5

Divide each side by '-7'.
c = 5.5

Simplifying
c = 5.5

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