12=9r+3

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Solution for 12=9r+3 equation:


Simplifying
12 = 9r + 3

Reorder the terms:
12 = 3 + 9r

Solving
12 = 3 + 9r

Solving for variable 'r'.

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

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

Combine like terms: 9r + -9r = 0
12 + -9r = 3 + 0
12 + -9r = 3

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

Combine like terms: 12 + -12 = 0
0 + -9r = 3 + -12
-9r = 3 + -12

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

Divide each side by '-9'.
r = 1

Simplifying
r = 1

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