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5/x - 1/2y = 6 | dikali 3 | 15x - 3/2y = 18 _
-20y+3y = -23
-17y =-23
y = -23/17
y = 1,4
3/x - 2/y = -1
3/x - 2 . 17/-23 = -1
3/x - 34/-23 =-1
3/x = 0,48
0,48x = 3
x = 6,3