2r-2=-9+r

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


Simplifying
2r + -2 = -9 + r

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

Solving
-2 + 2r = -9 + r

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.
-2 + 2r + -1r = -9 + r + -1r

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

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

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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