8+15r-2=8r+72-4r

Solution for 8+15r-2=8r+72-4r equation:

Simplifying
8 + 15r + -2 = 8r + 72 + -4r

Reorder the terms:
8 + -2 + 15r = 8r + 72 + -4r

Combine like terms: 8 + -2 = 6
6 + 15r = 8r + 72 + -4r

Reorder the terms:
6 + 15r = 72 + 8r + -4r

Combine like terms: 8r + -4r = 4r
6 + 15r = 72 + 4r

Solving
6 + 15r = 72 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
6 + 15r + -4r = 72 + 4r + -4r

Combine like terms: 15r + -4r = 11r
6 + 11r = 72 + 4r + -4r

Combine like terms: 4r + -4r = 0
6 + 11r = 72 + 0
6 + 11r = 72

Add '-6' to each side of the equation.
6 + -6 + 11r = 72 + -6

Combine like terms: 6 + -6 = 0
0 + 11r = 72 + -6
11r = 72 + -6

Combine like terms: 72 + -6 = 66
11r = 66

Divide each side by '11'.
r = 6

Simplifying
r = 6