3r+18-5r=-12

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Solution for 3r+18-5r=-12 equation:


Simplifying
3r + 18 + -5r = -12

Reorder the terms:
18 + 3r + -5r = -12

Combine like terms: 3r + -5r = -2r
18 + -2r = -12

Solving
18 + -2r = -12

Solving for variable 'r'.

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

Add '-18' to each side of the equation.
18 + -18 + -2r = -12 + -18

Combine like terms: 18 + -18 = 0
0 + -2r = -12 + -18
-2r = -12 + -18

Combine like terms: -12 + -18 = -30
-2r = -30

Divide each side by '-2'.
r = 15

Simplifying
r = 15

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