Question

X + 2y = 4 dan 2x - y = 3

Answer 1

X+2y=4 |×2
2x-y = 3 |×1

2x+4y=8
2x-y=3

dikurangin

5y= 5
y = 1

2x-y=3
2x-1 =3
2x=4
x=2

Answer 2

X + 2y = 4 ===> mnjadi x = 4 -2y
2x - y = 3
2 (4 -2y) - y = 3
8 - 4y - y = 3
8 - 5y = 3
-5y = 3 - 8
-5y = -5
y = -5/-5
y = 1 ====> masukkan ke pers 1
x + 2y = 4
x + 2.1 = 4
x + 2 = 4
x = 4 -2
x = 2
hp x dan y adalah (2, 1)