Factor using the GCF 12a - 30

To factor the expression using the Greatest Common Factor (GCF), we first need to identify the GCF of the numerical coefficients and the variables involved in the expression.

The numerical coefficients in the expression are 12 and 30. The GCF of 12 and 30 is 6.

Neither of the terms has a variable in common with a power higher than 0, so we don't factor any variable out.

Therefore, we can factor out the GCF, which is 6, from both terms:

12a - 30 = 6(2a) - 6(5) = 6(2a - 5)

The factored form using the GCF is:

6(2a - 5)