81=9+6r

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Solution for 81=9+6r equation:


Simplifying
81 = 9 + 6r

Solving
81 = 9 + 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
81 + -6r = 9 + 6r + -6r

Combine like terms: 6r + -6r = 0
81 + -6r = 9 + 0
81 + -6r = 9

Add '-81' to each side of the equation.
81 + -81 + -6r = 9 + -81

Combine like terms: 81 + -81 = 0
0 + -6r = 9 + -81
-6r = 9 + -81

Combine like terms: 9 + -81 = -72
-6r = -72

Divide each side by '-6'.
r = 12

Simplifying
r = 12

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