tentukan himpunan penyelesaian 3/x + 4/x = 6 dan 1/x +1/y = 3 plis dibantu ya pake cara makasi banyak

misal : 1/x = a
1/y = b

3/x + 4/y = 6
3.1/x + 4.1/y = 6
3a + 4b = 6 ..........(1)

1/x + 1/y = 3
a + b = 3 ..........(2)

gunakan metode eliminasi :
3a + 4b = 6 |x1| 3a + 4b = 6
a + b = 3 |x3| 3a + 3b = 9
_______________________-
b = -3

• b = 1/y
-3 = 1/y
y = -⅓

a + b = 3
a + (-3) = 3
a = 3 + 3
a = 6

• a = 1/x
6 = 1/x
x = 6