3(-2r-3)-3r=2r-31

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Solution for 3(-2r-3)-3r=2r-31 equation:


Simplifying
3(-2r + -3) + -3r = 2r + -31

Reorder the terms:
3(-3 + -2r) + -3r = 2r + -31
(-3 * 3 + -2r * 3) + -3r = 2r + -31
(-9 + -6r) + -3r = 2r + -31

Combine like terms: -6r + -3r = -9r
-9 + -9r = 2r + -31

Reorder the terms:
-9 + -9r = -31 + 2r

Solving
-9 + -9r = -31 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-9 + -9r + -2r = -31 + 2r + -2r

Combine like terms: -9r + -2r = -11r
-9 + -11r = -31 + 2r + -2r

Combine like terms: 2r + -2r = 0
-9 + -11r = -31 + 0
-9 + -11r = -31

Add '9' to each side of the equation.
-9 + 9 + -11r = -31 + 9

Combine like terms: -9 + 9 = 0
0 + -11r = -31 + 9
-11r = -31 + 9

Combine like terms: -31 + 9 = -22
-11r = -22

Divide each side by '-11'.
r = 2

Simplifying
r = 2

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