Question

Ada yg bisa bantu pake cara? tolong:(

Answer 1

Misal 1/x = p dan 1/y = q
2/x + 3/5y = 4/61
=> 2p + (3/5)q = 4/61 .... kali 5
=> 10p + 3q = 20/61

1/4x - 1/2y = 11/61
=> (1/4)p - (1/2)q = 11/61 .... kali 4
=> p - 2q = 44/61

eliminasi
10p + 3q = 20/61 |x2| 20p + 6q = 40/61
p - 2q = 44/61 .... |x3| 3p - 6q = 132/61
------------------------------------------------------- +
...................................... 23p = 172/61
=> p = 172/(61 . 23)
=> 1/x = 172/1403
=> x = 1403/172
=> 1403/4a = 1403/172
=> 4a = 172
=> a = 43