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Subtitusikan persamaan (iii) ke (i)
x + z = 2 ... (iv)
Subtitusikan persamaan (iii) ke (ii)
6 = 2x + 3 + z
2x + z = 3 ... (v)
Eliminasi persamaan (iv) dan (v)
x + z = 2
2x + z = 3
––––––– (–)
-x = -1
x = 1
Subtitusikan x = 1 ke persamaan (iv)
x + z = 2
1 + z = 2
z = 1
Didapat x = 1 , y = 3 , z = 1
Maka :
= y + |x - z|
= 3 + |1 - 1|
= 3
koreksi jika ada kesalahan