-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 = 89
-9r = 89

Divide each side by '-9'.
r = -9.888888889

Simplifying
r = -9.888888889

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