-15+9r=18r+12

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Solution for -15+9r=18r+12 equation:


Simplifying
-15 + 9r = 18r + 12

Reorder the terms:
-15 + 9r = 12 + 18r

Solving
-15 + 9r = 12 + 18r

Solving for variable 'r'.

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

Add '-18r' to each side of the equation.
-15 + 9r + -18r = 12 + 18r + -18r

Combine like terms: 9r + -18r = -9r
-15 + -9r = 12 + 18r + -18r

Combine like terms: 18r + -18r = 0
-15 + -9r = 12 + 0
-15 + -9r = 12

Add '15' to each side of the equation.
-15 + 15 + -9r = 12 + 15

Combine like terms: -15 + 15 = 0
0 + -9r = 12 + 15
-9r = 12 + 15

Combine like terms: 12 + 15 = 27
-9r = 27

Divide each side by '-9'.
r = -3

Simplifying
r = -3

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