7r-r=18

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Solution for 7r-r=18 equation: 


Simplifying
7r + -1r = 18

Combine like terms: 7r + -1r = 6r
6r = 18

Solving
6r = 18

Solving for variable 'r'.

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

Divide each side by '6'.
r = 3

Simplifying
r = 3

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