7ab-a=

Solution for 7ab-a= equation:

Simplifying
7ab + -1a = 0

Reorder the terms:
-1a + 7ab = 0

Solving
-1a + 7ab = 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(-1 + 7b) = 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 '(-1 + 7b)' equal to zero and attempt to solve:

Simplifying
-1 + 7b = 0

Solving
-1 + 7b = 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 + 7b = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 7b = 0 + 1
7b = 0 + 1

Combine like terms: 0 + 1 = 1
7b = 1

Add '-7b' to each side of the equation.
7b + -7b = 1 + -7b

Combine like terms: 7b + -7b = 0
0 = 1 + -7b

Simplifying
0 = 1 + -7b

The solution to this equation could not be determined.

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