Question

2/x +3/y = 12
3/x - 1/y = 7
tolong jwb ya pke prsamaan eliminasi dan subtitusi

Answer 1

Umpamakan 1/x=a dan 1/y=b
2a + 3b =12 (x1) => 2a + 3b = 12
3a - b = 7 (x3) ===> 9a - 3b = 21
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                              11a = 33 => a = 3
3(3) - b = 7
-b=-2
b=2
Jadi x = 1/3 dan y = 1/2