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1/x = a
1/y = b
Menyebabkan:
2a + b = 1
a - 2b = 8
Kalikan persamaan 1 dengan 2 menyebabkan:
4a + 2b = 2
a - 2b = 8
- - - Jumlah - - -
5a = 10
a = 2
Substitusikan untuk b
a - 2b = 8
2 - 2b = 8
2b = 2-8
2b = -6
b = -3
Sehingga.
a = 1/x
2 = 1/x
x = 1/2
b = 1/y
-3 = 1/y
y = -1/3
Maka,