Respuesta :

Answer:

6/7 = 36/42

12/8 = 30/20

Step-by-step explanation:

(6*?) / (7*6) = ?/42

(6*6) / (7*6) = 36/42

(12*2.5) / (8*?) = 30/?

(12*2.5) / (8*2.5) = 30/20

Hope this helps!