Find the GCF of 20z - 4

Answer 1

To find the greatest common factor (GCF) of the expression \( 20z - 4 \), we first look for the GCF of the coefficients and any common factors in the terms.

1. The coefficients are 20 and -4.
2. The GCF of 20 and 4 is 4.

Now, we can factor out the GCF from the expression:

\[ 20z - 4 = 4(5z - 1) \]

The GCF of the expression \( 20z - 4 \) is \( 4 \).