3+3r-2=9r+9-4r

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Solution for 3+3r-2=9r+9-4r equation:


Simplifying
3 + 3r + -2 = 9r + 9 + -4r

Reorder the terms:
3 + -2 + 3r = 9r + 9 + -4r

Combine like terms: 3 + -2 = 1
1 + 3r = 9r + 9 + -4r

Reorder the terms:
1 + 3r = 9 + 9r + -4r

Combine like terms: 9r + -4r = 5r
1 + 3r = 9 + 5r

Solving
1 + 3r = 9 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
1 + 3r + -5r = 9 + 5r + -5r

Combine like terms: 3r + -5r = -2r
1 + -2r = 9 + 5r + -5r

Combine like terms: 5r + -5r = 0
1 + -2r = 9 + 0
1 + -2r = 9

Add '-1' to each side of the equation.
1 + -1 + -2r = 9 + -1

Combine like terms: 1 + -1 = 0
0 + -2r = 9 + -1
-2r = 9 + -1

Combine like terms: 9 + -1 = 8
-2r = 8

Divide each side by '-2'.
r = -4

Simplifying
r = -4

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