Resposta :
b) S = { 5,4 }
x – y = 1
x + y = 9
Achando o X
x+x-y+y = 1+9
2x = 10
x = 10/2
x = 5
Achando o Y
x+y = 9
5+y = 9
y = 9-5
y = 4
Boa tarde ❤️
04/10/21

x – y = 1
x + y = 9
Achando o X
x+x-y+y = 1+9
2x = 10
x = 10/2
x = 5
Achando o Y
x+y = 9
5+y = 9
y = 9-5
y = 4
04/10/21