Answer:
18 (3) + 18 (X) = 18 (3+X)
Explanation:
AB + AC = A ( B + B )
A is the common factor
Factor to find common factor
54 = 2 * 3 * 3 * 3
18 = 2 * 3 * 3 * x
greatest common factor (GCF) = 2 * 3 * 3 = 18
18 (3) + 18 (X) = 18 (3+X)
hope it helps! <3