Answer:
there are infinite answers because the equation 12x+8=12x+8 is a true statement
Step-by-step explanation:
This is not my level but i can try to solve it
The answer would be choice A.
Gcf refers to a digit which can divide both numbers without a remainder
20|50 is divisible by 2 to become 10|25 and then divisible by 5 to become 2|5
=2×5
Gcf= 10