dik:5x-2y=12dan2x+3y=1 nilaidari x-y adalah pakai cara

5x - 2y = 12 (×3)  15x - 6y = 36
2x + 3y = 1  (×2)  4x    + 6y = 2
__________________________ +
                               19x = 38
                                   x = 2

2x + 3y = 1
2(2) + 3y = 1
4 + 3y = 1
3y = -3
y = -1

x - y
2 - (-1)
3

gunakan metode eliminasi
5x - 2y = 12 (×2)
2x + 3y = 1 (×5)

10x - 4y = 24
10x + 15y = 5
__________-
-19y = 19
y = -1

gunakan metode subtitusi
2x + 3y = 1
2x + 3(-1) = 1
2x = 1 + 3
2x = 4
x = 2

maka nilai dari
x - y = 2 - (-1) = 2 + 1 = 3

jawabannya 3

semoga berguna +_+