9+3ab-ab-4=

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Solution for 9+3ab-ab-4= equation:


Simplifying
9 + 3ab + -1ab + -4 = 0

Reorder the terms:
9 + -4 + 3ab + -1ab = 0

Combine like terms: 9 + -4 = 5
5 + 3ab + -1ab = 0

Combine like terms: 3ab + -1ab = 2ab
5 + 2ab = 0

Solving
5 + 2ab = 0

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 2ab = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 2ab = 0 + -5
2ab = 0 + -5

Combine like terms: 0 + -5 = -5
2ab = -5

Divide each side by '2b'.
a = -2.5b-1

Simplifying
a = -2.5b-1

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