12r-9r-2r+1=17

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Solution for 12r-9r-2r+1=17 equation:


Simplifying
12r + -9r + -2r + 1 = 17

Reorder the terms:
1 + 12r + -9r + -2r = 17

Combine like terms: 12r + -9r = 3r
1 + 3r + -2r = 17

Combine like terms: 3r + -2r = 1r
1 + 1r = 17

Solving
1 + 1r = 17

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 + 1r = 17 + -1

Combine like terms: 1 + -1 = 0
0 + 1r = 17 + -1
1r = 17 + -1

Combine like terms: 17 + -1 = 16
1r = 16

Divide each side by '1'.
r = 16

Simplifying
r = 16

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