-8r-r=-12-7r

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Solution for -8r-r=-12-7r equation:


Simplifying
-8r + -1r = -12 + -7r

Combine like terms: -8r + -1r = -9r
-9r = -12 + -7r

Solving
-9r = -12 + -7r

Solving for variable 'r'.

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

Add '7r' to each side of the equation.
-9r + 7r = -12 + -7r + 7r

Combine like terms: -9r + 7r = -2r
-2r = -12 + -7r + 7r

Combine like terms: -7r + 7r = 0
-2r = -12 + 0
-2r = -12

Divide each side by '-2'.
r = 6

Simplifying
r = 6

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