8-(-9)r=-73

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Solution for 8-(-9)r=-73 equation: 


Simplifying
8 + -1(-9) * r = -73

Multiply -1 * -9
8 + 9r = -73

Solving
8 + 9r = -73

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + 9r = -73 + -8

Combine like terms: 8 + -8 = 0
0 + 9r = -73 + -8
9r = -73 + -8

Combine like terms: -73 + -8 = -81
9r = -81

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

Simplifying
r = -9

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