Respuesta :

A is equivalent, B is not

Step-by-step explanation:

2 fractions (ratios) in the form a/b and c/d are equivalent if it's verified the following relation:

a·d = b·c

Let's see!

1) 4·7 = 3·7     False. They are not equivalent.

2) 9·4 = 18·2    True. They are equivalent.

RELAXING NOICE
Relax