ab+4a+5b+20=

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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.

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