3-3r+r=-9

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Solution for 3-3r+r=-9 equation: 


Simplifying
3 + -3r + r = -9

Combine like terms: -3r + r = -2r
3 + -2r = -9

Solving
3 + -2r = -9

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + -2r = -9 + -3

Combine like terms: 3 + -3 = 0
0 + -2r = -9 + -3
-2r = -9 + -3

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

Divide each side by '-2'.
r = 6

Simplifying
r = 6

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