-2r+12=3

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Solution for -2r+12=3 equation: 


Simplifying
-2r + 12 = 3

Reorder the terms:
12 + -2r = 3

Solving
12 + -2r = 3

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + -2r = 3 + -12

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

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

Divide each side by '-2'.
r = 4.5

Simplifying
r = 4.5

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