12+18r=9+r

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


Simplifying
12 + 18r = 9 + r

Solving
12 + 18r = 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.
12 + 18r + -1r = 9 + r + -1r

Combine like terms: 18r + -1r = 17r
12 + 17r = 9 + r + -1r

Combine like terms: r + -1r = 0
12 + 17r = 9 + 0
12 + 17r = 9

Add '-12' to each side of the equation.
12 + -12 + 17r = 9 + -12

Combine like terms: 12 + -12 = 0
0 + 17r = 9 + -12
17r = 9 + -12

Combine like terms: 9 + -12 = -3
17r = -3

Divide each side by '17'.
r = -0.1764705882

Simplifying
r = -0.1764705882

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