13r-9r-3r=18

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Solution for 13r-9r-3r=18 equation: 


Simplifying
13r + -9r + -3r = 18

Combine like terms: 13r + -9r = 4r
4r + -3r = 18

Combine like terms: 4r + -3r = 1r
1r = 18

Solving
1r = 18

Solving for variable 'r'.

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

Divide each side by '1'.
r = 18

Simplifying
r = 18

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