3r-6r+9=r

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Solution for 3r-6r+9=r equation:


Simplifying
3r + -6r + 9 = r

Reorder the terms:
9 + 3r + -6r = r

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

Solving
9 + -3r = r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
9 + -3r + -1r = r + -1r

Combine like terms: -3r + -1r = -4r
9 + -4r = r + -1r

Combine like terms: r + -1r = 0
9 + -4r = 0

Add '-9' to each side of the equation.
9 + -9 + -4r = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -4r = 0 + -9
-4r = 0 + -9

Combine like terms: 0 + -9 = -9
-4r = -9

Divide each side by '-4'.
r = 2.25

Simplifying
r = 2.25

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