Respuesta :

alfonsoantonio

Answer:

x=10 , y=7

Step-by-step explanation:

x + y = 17

we know that ducks has 2 feet and sheep has 4 feet.

so, 2x + 4y = 48

x = 17 -y

2(17-y) + 4y = 48

34 - 2y + 4y = 48

2y = 48 -3 4

2y =1 4

y=7

x + 7 = 17

x = 17-7

x=10