-6+4a=18fora

Solution for -6+4a=18fora equation:

Simplifying
-6 + 4a = 18fora

Solving
-6 + 4a = 18afor

Solving for variable 'a'.

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

Add '-18afor' to each side of the equation.
-6 + 4a + -18afor = 18afor + -18afor

Combine like terms: 18afor + -18afor = 0
-6 + 4a + -18afor = 0

Add '6' to each side of the equation.
-6 + 4a + 6 + -18afor = 0 + 6

Reorder the terms:
-6 + 6 + 4a + -18afor = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 4a + -18afor = 0 + 6
4a + -18afor = 0 + 6

Combine like terms: 0 + 6 = 6
4a + -18afor = 6

Reorder the terms:
-6 + 4a + -18afor = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + 4a + -18afor = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-3 + 2a + -9afor) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(-3 + 2a + -9afor)' equal to zero and attempt to solve:

Simplifying
-3 + 2a + -9afor = 0

Solving
-3 + 2a + -9afor = 0

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

Add '3' to each side of the equation.
-3 + 2a + 3 + -9afor = 0 + 3

Reorder the terms:
-3 + 3 + 2a + -9afor = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 2a + -9afor = 0 + 3
2a + -9afor = 0 + 3

Combine like terms: 0 + 3 = 3
2a + -9afor = 3

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.