-87=-6-9r

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Solution for -87=-6-9r equation:


Simplifying
-87 = -6 + -9r

Solving
-87 = -6 + -9r

Solving for variable 'r'.

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

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

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

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

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

Combine like terms: -6 + 87 = 81
9r = 81

Divide each side by '9'.
r = 9

Simplifying
r = 9

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