(a-4)(b+8)=0

Solution for (a-4)(b+8)=0 equation:

Simplifying
(a + -4)(b + 8) = 0

Reorder the terms:
(-4 + a)(b + 8) = 0

Reorder the terms:
(-4 + a)(8 + b) = 0

Multiply (-4 + a) * (8 + b)
(-4(8 + b) + a(8 + b)) = 0
((8 * -4 + b * -4) + a(8 + b)) = 0
((-32 + -4b) + a(8 + b)) = 0
(-32 + -4b + (8 * a + b * a)) = 0
(-32 + -4b + (8a + ab)) = 0

Reorder the terms:
(-32 + 8a + ab + -4b) = 0
(-32 + 8a + ab + -4b) = 0

Solving
-32 + 8a + ab + -4b = 0

Solving for variable 'a'.

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

Add '32' to each side of the equation.
-32 + 8a + ab + 32 + -4b = 0 + 32

Reorder the terms:
-32 + 32 + 8a + ab + -4b = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 8a + ab + -4b = 0 + 32
8a + ab + -4b = 0 + 32

Combine like terms: 0 + 32 = 32
8a + ab + -4b = 32

Add '4b' to each side of the equation.
8a + ab + -4b + 4b = 32 + 4b

Combine like terms: -4b + 4b = 0
8a + ab + 0 = 32 + 4b
8a + ab = 32 + 4b

Reorder the terms:
-32 + 8a + ab + -4b = 32 + 4b + -32 + -4b

Reorder the terms:
-32 + 8a + ab + -4b = 32 + -32 + 4b + -4b

Combine like terms: 32 + -32 = 0
-32 + 8a + ab + -4b = 0 + 4b + -4b
-32 + 8a + ab + -4b = 4b + -4b

Combine like terms: 4b + -4b = 0
-32 + 8a + ab + -4b = 0

The solution to this equation could not be determined.