-3(2r-1)+r=-72

Solution for -3(2r-1)+r=-72 equation:

Simplifying
-3(2r + -1) + r = -72

Reorder the terms:
-3(-1 + 2r) + r = -72
(-1 * -3 + 2r * -3) + r = -72
(3 + -6r) + r = -72

Combine like terms: -6r + r = -5r
3 + -5r = -72

Solving
3 + -5r = -72

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 + -5r = -72 + -3

Combine like terms: 3 + -3 = 0
0 + -5r = -72 + -3
-5r = -72 + -3

Combine like terms: -72 + -3 = -75
-5r = -75

Divide each side by '-5'.
r = 15

Simplifying
r = 15