-r+9=-2r

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


Simplifying
-1r + 9 = -2r

Reorder the terms:
9 + -1r = -2r

Solving
9 + -1r = -2r

Solving for variable 'r'.

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

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

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

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

Add '-9' to each side of the equation.
9 + -9 + 1r = 0 + -9

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

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

Divide each side by '1'.
r = -9

Simplifying
r = -9

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