4r-9r=15

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Solution for 4r-9r=15 equation: 


Simplifying
4r + -9r = 15

Combine like terms: 4r + -9r = -5r
-5r = 15

Solving
-5r = 15

Solving for variable 'r'.

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

Divide each side by '-5'.
r = -3

Simplifying
r = -3

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