9(9+8r)=

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Solution for 9(9+8r)= equation:


Simplifying
9(9 + 8r) = 0
(9 * 9 + 8r * 9) = 0
(81 + 72r) = 0

Solving
81 + 72r = 0

Solving for variable 'r'.

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

Add '-81' to each side of the equation.
81 + -81 + 72r = 0 + -81

Combine like terms: 81 + -81 = 0
0 + 72r = 0 + -81
72r = 0 + -81

Combine like terms: 0 + -81 = -81
72r = -81

Divide each side by '72'.
r = -1.125

Simplifying
r = -1.125

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