6r-9=-87

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Solution for 6r-9=-87 equation: 


Simplifying
6r + -9 = -87

Reorder the terms:
-9 + 6r = -87

Solving
-9 + 6r = -87

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + 6r = -87 + 9

Combine like terms: -9 + 9 = 0
0 + 6r = -87 + 9
6r = -87 + 9

Combine like terms: -87 + 9 = -78
6r = -78

Divide each side by '6'.
r = -13

Simplifying
r = -13

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