-5r-9=-2r+12

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Solution for -5r-9=-2r+12 equation:


Simplifying
-5r + -9 = -2r + 12

Reorder the terms:
-9 + -5r = -2r + 12

Reorder the terms:
-9 + -5r = 12 + -2r

Solving
-9 + -5r = 12 + -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 + -5r + 2r = 12 + -2r + 2r

Combine like terms: -5r + 2r = -3r
-9 + -3r = 12 + -2r + 2r

Combine like terms: -2r + 2r = 0
-9 + -3r = 12 + 0
-9 + -3r = 12

Add '9' to each side of the equation.
-9 + 9 + -3r = 12 + 9

Combine like terms: -9 + 9 = 0
0 + -3r = 12 + 9
-3r = 12 + 9

Combine like terms: 12 + 9 = 21
-3r = 21

Divide each side by '-3'.
r = -7

Simplifying
r = -7

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