7r+2r=99

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Solution for 7r+2r=99 equation: 


Simplifying
7r + 2r = 99

Combine like terms: 7r + 2r = 9r
9r = 99

Solving
9r = 99

Solving for variable 'r'.

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

Divide each side by '9'.
r = 11

Simplifying
r = 11

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