no 14 lh buat caranya yap

(x - 1)/2 + (y + 1)/7 = 1 ... Kalikan 14
7(x - 1) + 2(y + 1) = 14
7x + 2y = 14 + 7 - 2
7x + 2y = 19 ... (1)

x/3 - (y + 1)/4 = 1 ... Kalikan 12
4x - 3(y + 1) = 12
4x - 3y = 12 + 3
4x - 3y = 15 ... (2)

Eliminasi y
• persmaan (1) dikalikan 3
• persmaan (2) dikalikan 2

21x + 6y = 57
8x - 6y = 30
------------------- (+)
29x = 87
x = 3

Substitusi kan x = 3 ke slhstu persmaan
4x - 3y = 15
4.3 - 3y = 15
3y = 12 - 15
y = -1

HP = {(3,-1)}