5+8(8-8a)=-123

Solution for 5+8(8-8a)=-123 equation:

Simplifying
5 + 8(8 + -8a) = -123
5 + (8 * 8 + -8a * 8) = -123
5 + (64 + -64a) = -123

Combine like terms: 5 + 64 = 69
69 + -64a = -123

Solving
69 + -64a = -123

Solving for variable 'a'.

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

Add '-69' to each side of the equation.
69 + -69 + -64a = -123 + -69

Combine like terms: 69 + -69 = 0
0 + -64a = -123 + -69
-64a = -123 + -69

Combine like terms: -123 + -69 = -192
-64a = -192

Divide each side by '-64'.
a = 3

Simplifying
a = 3