-8r-2+7r=-9

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Solution for -8r-2+7r=-9 equation:


Simplifying
-8r + -2 + 7r = -9

Reorder the terms:
-2 + -8r + 7r = -9

Combine like terms: -8r + 7r = -1r
-2 + -1r = -9

Solving
-2 + -1r = -9

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + -1r = -9 + 2

Combine like terms: -2 + 2 = 0
0 + -1r = -9 + 2
-1r = -9 + 2

Combine like terms: -9 + 2 = -7
-1r = -7

Divide each side by '-1'.
r = 7

Simplifying
r = 7

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