Question

Tolong kerjakan soal pada gambar

Answer 1

6/x - 15/y = - 1
6/x + 10/y = 2
____________ _
- 25/y = - 3
y = 25/3
6/x = - 1 + 45/25
6/x = 20/25
20x = 150
x = 15/2

3x - 2y = 3(15/2) - 2(25/3)
= 45/2 - 50/3
= 135/6 - 100/6
= 35/6