To factor the linear expression \( 50x - 30 \) using the greatest common factor (GCF), we first need to identify the GCF of the coefficients (50 and -30).
The GCF of 50 and 30 is 10.
Now, we can factor out the GCF from the expression:
\[ 50x - 30 = 10(5x - 3) \]
So, the factored form of the expression \( 50x - 30 \) is:
\[ 10(5x - 3) \]