Question

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X+y=5 y+z=6 dan 2x+y+z=4

Answer 1

Verified answer

X+y=5 ........(1)
z+y=6..........(2)
--------- -
X-z= -1
X = z-1...........(3)

z+y=6
y= 6-z.............(4)
Subsitusikan persamaan 3,4 ke persamaan 5

2x+y+z=4...........(5)
2×(z-1) +6-z+z =4
2z-2+6 =4
2z+4=4
2z=4-4
2z=0
z=0

x= z-1
= 0-1
=-1
y= 6-z
= 6-0
= 6

Hp x= -1 , y = 6 , z = 0