-7r+3(-8r+2)=99

Solution for -7r+3(-8r+2)=99 equation:

Simplifying
-7r + 3(-8r + 2) = 99

Reorder the terms:
-7r + 3(2 + -8r) = 99
-7r + (2 * 3 + -8r * 3) = 99
-7r + (6 + -24r) = 99

Reorder the terms:
6 + -7r + -24r = 99

Combine like terms: -7r + -24r = -31r
6 + -31r = 99

Solving
6 + -31r = 99

Solving for variable 'r'.

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

Add '-6' to each side of the equation.
6 + -6 + -31r = 99 + -6

Combine like terms: 6 + -6 = 0
0 + -31r = 99 + -6
-31r = 99 + -6

Combine like terms: 99 + -6 = 93
-31r = 93

Divide each side by '-31'.
r = -3

Simplifying
r = -3