Penyelesaian dari sistem persamaan x+y=24 x+z=21 y+z=9

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X + y = 24
x + z = 21
======== –
y – z = 3
y + z = 9
======== –
-2z = -6
z = -6/-2
z = 3

y – 3 = 3
y = 3+3
y = 6

x + 6 = 24
x = 24 -6
x = 18

hp = { 18 , 6 , 3 }