7c-9=8c

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Solution for 7c-9=8c equation:


Simplifying
7c + -9 = 8c

Reorder the terms:
-9 + 7c = 8c

Solving
-9 + 7c = 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.
-9 + 7c + -8c = 8c + -8c

Combine like terms: 7c + -8c = -1c
-9 + -1c = 8c + -8c

Combine like terms: 8c + -8c = 0
-9 + -1c = 0

Add '9' to each side of the equation.
-9 + 9 + -1c = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -1c = 0 + 9
-1c = 0 + 9

Combine like terms: 0 + 9 = 9
-1c = 9

Divide each side by '-1'.
c = -9

Simplifying
c = -9

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