-9r-4=-85

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Solution for -9r-4=-85 equation: 


Simplifying
-9r + -4 = -85

Reorder the terms:
-4 + -9r = -85

Solving
-4 + -9r = -85

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + -9r = -85 + 4

Combine like terms: -4 + 4 = 0
0 + -9r = -85 + 4
-9r = -85 + 4

Combine like terms: -85 + 4 = -81
-9r = -81

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

Simplifying
r = 9

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