Respuesta :

Answer:

3:7

Step-by-step explanation:

18/6(largest factor)=3

42/6(largest factor)=7

Answer:

3/7

Step-by-step explanation:

18 ÷  2      9 ÷ 3      3

----        =  -----   =   ----

42 ÷ 2      21 ÷ 3     7