12r-17r=105

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Solution for 12r-17r=105 equation: 


Simplifying
12r + -17r = 105

Combine like terms: 12r + -17r = -5r
-5r = 105

Solving
-5r = 105

Solving for variable 'r'.

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

Divide each side by '-5'.
r = -21

Simplifying
r = -21

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