Question

Olá,
resolva o sistema abaixo:
x+y+z=7
x+y=4
3y=6

Answer 1

3) 3y = 6
y = 6/3
y = 2
2) x + y = 4
x + 2 = 4
x = 4 - 2
x = 2
1) x + y + z = 7
2 + 2 + z = 7
z = 7 - 4
z = 3