Respuesta :
the answer would be (18) 18 times 4= 72 and 18 times 1 = 18
the greatest common factor of 72 and 18 is 18
72 ÷ 18 = 4
18 × 4 = 72
18 × 1 = 18
18 ÷ 1 = 18
72 ÷ 18 = 4
18 × 4 = 72
18 × 1 = 18
18 ÷ 1 = 18