-12r+4r=-100

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Solution for -12r+4r=-100 equation: 


Simplifying
-12r + 4r = -100

Combine like terms: -12r + 4r = -8r
-8r = -100

Solving
-8r = -100

Solving for variable 'r'.

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

Divide each side by '-8'.
r = 12.5

Simplifying
r = 12.5

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