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3/x - 4/y = 16, menjadi
3A - 4B = 16...(2)
samakan nilai A pada ke2 pers di atas
pers (1) x 3
pers(2) x 2 , menjadi
6A + 9B = 15
6A - 8B = 32 kurangi ke2 persamaan
17B = - 17
B = -1, substitusi nilai B
2A + 3B =5...(1)
2A + 3(-1) = 5
2A = 8
A= 4
karena 1/x = A, maka x= 1/A = 1/4
B = 1/y, maka y = 1/B = 1/(-1) = -1
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