12r-6=9r+9

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Solution for 12r-6=9r+9 equation:


Simplifying
12r + -6 = 9r + 9

Reorder the terms:
-6 + 12r = 9r + 9

Reorder the terms:
-6 + 12r = 9 + 9r

Solving
-6 + 12r = 9 + 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.
-6 + 12r + -9r = 9 + 9r + -9r

Combine like terms: 12r + -9r = 3r
-6 + 3r = 9 + 9r + -9r

Combine like terms: 9r + -9r = 0
-6 + 3r = 9 + 0
-6 + 3r = 9

Add '6' to each side of the equation.
-6 + 6 + 3r = 9 + 6

Combine like terms: -6 + 6 = 0
0 + 3r = 9 + 6
3r = 9 + 6

Combine like terms: 9 + 6 = 15
3r = 15

Divide each side by '3'.
r = 5

Simplifying
r = 5

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