90+c=10c-9

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Solution for 90+c=10c-9 equation:


Simplifying
90 + c = 10c + -9

Reorder the terms:
90 + c = -9 + 10c

Solving
90 + c = -9 + 10c

Solving for variable 'c'.

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

Add '-10c' to each side of the equation.
90 + c + -10c = -9 + 10c + -10c

Combine like terms: c + -10c = -9c
90 + -9c = -9 + 10c + -10c

Combine like terms: 10c + -10c = 0
90 + -9c = -9 + 0
90 + -9c = -9

Add '-90' to each side of the equation.
90 + -90 + -9c = -9 + -90

Combine like terms: 90 + -90 = 0
0 + -9c = -9 + -90
-9c = -9 + -90

Combine like terms: -9 + -90 = -99
-9c = -99

Divide each side by '-9'.
c = 11

Simplifying
c = 11

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