9(-9+r)=-126

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Solution for 9(-9+r)=-126 equation: 


Simplifying
9(-9 + r) = -126
(-9 * 9 + r * 9) = -126
(-81 + 9r) = -126

Solving
-81 + 9r = -126

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 + 9r = -126 + 81

Combine like terms: -81 + 81 = 0
0 + 9r = -126 + 81
9r = -126 + 81

Combine like terms: -126 + 81 = -45
9r = -45

Divide each side by '9'.
r = -5

Simplifying
r = -5

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