-9=2r-2+5r

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Solution for -9=2r-2+5r equation:


Simplifying
-9 = 2r + -2 + 5r

Reorder the terms:
-9 = -2 + 2r + 5r

Combine like terms: 2r + 5r = 7r
-9 = -2 + 7r

Solving
-9 = -2 + 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.
-9 + -7r = -2 + 7r + -7r

Combine like terms: 7r + -7r = 0
-9 + -7r = -2 + 0
-9 + -7r = -2

Add '9' to each side of the equation.
-9 + 9 + -7r = -2 + 9

Combine like terms: -9 + 9 = 0
0 + -7r = -2 + 9
-7r = -2 + 9

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

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

Simplifying
r = -1

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