9a+2ab+a-ba-4a=

Solution for 9a+2ab+a-ba-4a= equation:

Simplifying
9a + 2ab + a + -1ba + -4a = 0

Reorder the terms:
9a + a + -4a + 2ab + -1ab = 0

Combine like terms: 9a + a = 10a
10a + -4a + 2ab + -1ab = 0

Combine like terms: 10a + -4a = 6a
6a + 2ab + -1ab = 0

Combine like terms: 2ab + -1ab = 1ab
6a + 1ab = 0

Solving
6a + 1ab = 0

Solving for variable 'a'.

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

Factor out the Greatest Common Factor (GCF), 'a'.
a(6 + b) = 0

Subproblem 1
Set the factor 'a' equal to zero and attempt to solve:

Simplifying
a = 0

Solving
a = 0

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

Simplifying
a = 0
Subproblem 2
Set the factor '(6 + b)' equal to zero and attempt to solve:

Simplifying
6 + b = 0

Solving
6 + b = 0

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

Add '-6' to each side of the equation.
6 + -6 + b = 0 + -6

Combine like terms: 6 + -6 = 0
0 + b = 0 + -6
b = 0 + -6

Combine like terms: 0 + -6 = -6
b = -6

Add '-1b' to each side of the equation.
b + -1b = -6 + -1b

Combine like terms: b + -1b = 0
0 = -6 + -1b

Simplifying
0 = -6 + -1b

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
a = {0}