3ab+7ab-2a=

Solution for 3ab+7ab-2a= equation:

Simplifying
3ab + 7ab + -2a = 0

Reorder the terms:
-2a + 3ab + 7ab = 0

Combine like terms: 3ab + 7ab = 10ab
-2a + 10ab = 0

Solving
-2a + 10ab = 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), '2a'.
2a(-1 + 5b) = 0

Ignore the factor 2.
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 '(-1 + 5b)' equal to zero and attempt to solve:

Simplifying
-1 + 5b = 0

Solving
-1 + 5b = 0

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

Add '1' to each side of the equation.
-1 + 1 + 5b = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 5b = 0 + 1
5b = 0 + 1

Combine like terms: 0 + 1 = 1
5b = 1

Add '-5b' to each side of the equation.
5b + -5b = 1 + -5b

Combine like terms: 5b + -5b = 0
0 = 1 + -5b

Simplifying
0 = 1 + -5b

The solution to this equation could not be determined.

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