Tiga pelajar, Anna,Bob dan Chris mengukur berat badan. Anna dan bob = 226kg Bob dan Chris = 210 kg Anna dan chris = 200 kg Berat badan setiap pelajar ....?

anna = x
bob = y
chris = z
x+y = 226 x = 226-y
y+z = 210 z = 210-y
x+z = 200
(226-y) + (210-y) = 200
436-2y = 200
436 = 200+2y
436-200 = 2y
236 = 2y
y = 236/2
y = 118
x = 226-y
x = 226-118
x = 108
z = 210-y
z = 210-118
z = 92
jadi berat anna 108 kg, bob 118 kg, chris 92 kg
klw gk salah yha