-108=9r

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Solution for -108=9r equation:


Simplifying
-108 = 9r

Solving
-108 = 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
-108 + -9r = 9r + -9r

Combine like terms: 9r + -9r = 0
-108 + -9r = 0

Add '108' to each side of the equation.
-108 + 108 + -9r = 0 + 108

Combine like terms: -108 + 108 = 0
0 + -9r = 0 + 108
-9r = 0 + 108

Combine like terms: 0 + 108 = 108
-9r = 108

Divide each side by '-9'.
r = -12

Simplifying
r = -12

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