20r-19r+-12r+9r=-6

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Solution for 20r-19r+-12r+9r=-6 equation: 


Simplifying
20r + -19r + -12r + 9r = -6

Combine like terms: 20r + -19r = 1r
1r + -12r + 9r = -6

Combine like terms: 1r + -12r = -11r
-11r + 9r = -6

Combine like terms: -11r + 9r = -2r
-2r = -6

Solving
-2r = -6

Solving for variable 'r'.

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

Divide each side by '-2'.
r = 3

Simplifying
r = 3

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