12r+6=87+9r

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Solution for 12r+6=87+9r equation:


Simplifying
12r + 6 = 87 + 9r

Reorder the terms:
6 + 12r = 87 + 9r

Solving
6 + 12r = 87 + 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 = 87 + 9r + -9r

Combine like terms: 12r + -9r = 3r
6 + 3r = 87 + 9r + -9r

Combine like terms: 9r + -9r = 0
6 + 3r = 87 + 0
6 + 3r = 87

Add '-6' to each side of the equation.
6 + -6 + 3r = 87 + -6

Combine like terms: 6 + -6 = 0
0 + 3r = 87 + -6
3r = 87 + -6

Combine like terms: 87 + -6 = 81
3r = 81

Divide each side by '3'.
r = 27

Simplifying
r = 27

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