Question

×+y+z=10 y+2z=5 z=1 resolva

Answer 1

z = 1

y + 2z = 5
y + 2(1) = 5
y + 2 = 5
y = 5-2
y = 3

x + y + z = 10
x + 3 + 1 = 10
x + 4 = 10
x = 10 - 4
x = 6

Answer 2

z = 1


y + 2z = 5
y + 2(1) = 5
y + 2 = 5
y = 5-2
y = 3


x + y + z = 10
x + 3 + 1 = 10                                               y=3
x + 4 = 10                                                     x=6
x = 10 - 4
x = 6