-4r-5r=9

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Solution for -4r-5r=9 equation: 


Simplifying
-4r + -5r = 9

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

Solving
-9r = 9

Solving for variable 'r'.

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

Divide each side by '-9'.
r = -1

Simplifying
r = -1

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