9r=-3r+12

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Solution for 9r=-3r+12 equation: 


Simplifying
9r = -3r + 12

Reorder the terms:
9r = 12 + -3r

Solving
9r = 12 + -3r

Solving for variable 'r'.

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

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

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

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

Divide each side by '12'.
r = 1

Simplifying
r = 1

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