Jika 2/x + 3/y = 2 dan 4/x – 6/y = 0, maka 5x-4y adalah…
Jawaban Terkonfirmasi
2/x + 3y = 2 | x2
4/x – 6/y = 0 | x1
_____________
4/x + 6/y = 4
4/x – 6/y = 0
__________+
8/x = 4
x = 8/4 = 2
2/x + 3/y = 2
2/2 + 3/y = 2
1 + 3/y = 2
3/y = 1
y = 3/1 = 3
5x – 4y = 5(2) – 4(3) = 10 – 12 = -2