Hasil penyelesaian dari: 2x+5/3 + x-3y/2 = -4 dan x-4/5 + 3x+5y/6 = 1 Pilihan: A. {(1,3)} B. {(1,-3)} C. {(-1,3)} D. {(-1,-3)} Pake caranya yah

2x + 5/3 + x - 3y/2 = -4
--------------------------------- ×6
4x + 10 + 3x - 9y = -24
7x - 9y = -34 ••• (1)

x - 4/5 + 3x + 5y/6 = 1
-------------------------------- ×30
6x - 24 + 15x + 25y = 30
21x + 25y = 54 ••• (2)

7x - 8y = -34 | ×3 |
21x + 25y = 54 | ×1 |
-----------------------------
21x - 24y = -102
21x + 25y = 54
------------------------ -
-49y = -156
y = 3,18... atau 3

7x - 8y = -34
7x - 8 (3) = -34
7x - 24 = -34
7x = -10
x = -1,42... atau -1

Jawaban : C {(-1,3)}