ab-4a+5b-20=

Solution for ab-4a+5b-20= equation:

Simplifying
ab + -4a + 5b + -20 = 0

Reorder the terms:
-20 + -4a + ab + 5b = 0

Solving
-20 + -4a + ab + 5b = 0

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + -4a + ab + 20 + 5b = 0 + 20

Reorder the terms:
-20 + 20 + -4a + ab + 5b = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -4a + ab + 5b = 0 + 20
-4a + ab + 5b = 0 + 20

Combine like terms: 0 + 20 = 20
-4a + ab + 5b = 20

Add '-5b' to each side of the equation.
-4a + ab + 5b + -5b = 20 + -5b

Combine like terms: 5b + -5b = 0
-4a + ab + 0 = 20 + -5b
-4a + ab = 20 + -5b

Reorder the terms:
-20 + -4a + ab + 5b = 20 + -5b + -20 + 5b

Reorder the terms:
-20 + -4a + ab + 5b = 20 + -20 + -5b + 5b

Combine like terms: 20 + -20 = 0
-20 + -4a + ab + 5b = 0 + -5b + 5b
-20 + -4a + ab + 5b = -5b + 5b

Combine like terms: -5b + 5b = 0
-20 + -4a + ab + 5b = 0

The solution to this equation could not be determined.