Question

x + y = 37 x menos y = 3 me ajudem

Answer 1

x+y=37.(-1)
x-y=3
-x-y=-37
x-y=3
0-2y=-34
2y=34
y=17
x-y=3
x-17=3
x= 3+17
x=20
solução = (20,17)

Answer 2

(1) x + y = 37

(2)x - y = 3

(1) + (2) = 2x + 0 = 40

X= 40/2

X= 20

(1) 20 + y = 37

Y= 37-20

Y= 17