13r-9r=16

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Solution for 13r-9r=16 equation: 


Simplifying
13r + -9r = 16

Combine like terms: 13r + -9r = 4r
4r = 16

Solving
4r = 16

Solving for variable 'r'.

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

Divide each side by '4'.
r = 4

Simplifying
r = 4

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