6r+3r=81

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Solution for 6r+3r=81 equation: 


Simplifying
6r + 3r = 81

Combine like terms: 6r + 3r = 9r
9r = 81

Solving
9r = 81

Solving for variable 'r'.

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

Divide each side by '9'.
r = 9

Simplifying
r = 9

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