Question

Nilai x dan y dari 10/x - 4/y = 4 dan 4/x
+ 8/y = 4

Answer 1

I.....10/x - 4/y = 4 [x2]
II....4/x + 8/y = 4 [x1 ]

20/x - 8/y = 8
4/x + 8/y = 4
___________+
24/x = 12
24. = 12x
24 / 12. = x
2. = x

4/x + 8/y = 4
4/2 + 8/y = 4
2 + 8/y = 4
8/y = 4 - 2
8/y = 2
8 = 2y
8 / 2 = y
4 = y

jadi :
x = 2
y = 4