15r-12r+6r-1=8

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Solution for 15r-12r+6r-1=8 equation:


Simplifying
15r + -12r + 6r + -1 = 8

Reorder the terms:
-1 + 15r + -12r + 6r = 8

Combine like terms: 15r + -12r = 3r
-1 + 3r + 6r = 8

Combine like terms: 3r + 6r = 9r
-1 + 9r = 8

Solving
-1 + 9r = 8

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + 9r = 8 + 1

Combine like terms: -1 + 1 = 0
0 + 9r = 8 + 1
9r = 8 + 1

Combine like terms: 8 + 1 = 9
9r = 9

Divide each side by '9'.
r = 1

Simplifying
r = 1

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