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

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

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

Reorder the terms:
99 = 3 + -2(-8 + -8r)
99 = 3 + (-8 * -2 + -8r * -2)
99 = 3 + (16 + 16r)

Combine like terms: 3 + 16 = 19
99 = 19 + 16r

Solving
99 = 19 + 16r

Solving for variable 'r'.

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

Add '-16r' to each side of the equation.
99 + -16r = 19 + 16r + -16r

Combine like terms: 16r + -16r = 0
99 + -16r = 19 + 0
99 + -16r = 19

Add '-99' to each side of the equation.
99 + -99 + -16r = 19 + -99

Combine like terms: 99 + -99 = 0
0 + -16r = 19 + -99
-16r = 19 + -99

Combine like terms: 19 + -99 = -80
-16r = -80

Divide each side by '-16'.
r = 5

Simplifying
r = 5