5ab-9a+4ab-7a=

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Solution for 5ab-9a+4ab-7a= equation: 


Simplifying
5ab + -9a + 4ab + -7a = 0

Reorder the terms:
-9a + -7a + 5ab + 4ab = 0

Combine like terms: -9a + -7a = -16a
-16a + 5ab + 4ab = 0

Combine like terms: 5ab + 4ab = 9ab
-16a + 9ab = 0

Solving
-16a + 9ab = 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(-16 + 9b) = 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 '(-16 + 9b)' equal to zero and attempt to solve:

Simplifying
-16 + 9b = 0

Solving
-16 + 9b = 0

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

Add '16' to each side of the equation.
-16 + 16 + 9b = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 9b = 0 + 16
9b = 0 + 16

Combine like terms: 0 + 16 = 16
9b = 16

Add '-9b' to each side of the equation.
9b + -9b = 16 + -9b

Combine like terms: 9b + -9b = 0
0 = 16 + -9b

Simplifying
0 = 16 + -9b

The solution to this equation could not be determined.

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

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