Tentukanlah himpunan penyelesaian x-3y =7 dan 2x+3y=4

Jawaban:

{11/3, -10/9}

Penjelasan dengan langkah-langkah:

x – 3y = 7

x = 7 + 3y

2x + 3y = 4

2(7 + 3y) + 3y = 4

14 + 6y + 3y = 4

14 + 9y = 4

9y = -10

y = -10/9

x = 7 + 3y

x = 7 + 3 × (-10/9)

x = 7 + (-10/3)

x = 11/3