-8=2r-r

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Solution for -8=2r-r equation:


Simplifying
-8 = 2r + -1r

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

Solving
-8 = 1r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-8 + -1r = 1r + -1r

Combine like terms: 1r + -1r = 0
-8 + -1r = 0

Add '8' to each side of the equation.
-8 + 8 + -1r = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -1r = 0 + 8
-1r = 0 + 8

Combine like terms: 0 + 8 = 8
-1r = 8

Divide each side by '-1'.
r = -8

Simplifying
r = -8

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