Tahu caranya gak? Cepetan jawab

3y + 5x - 15 = 0  l x1 l
y - 2x - 2 = 0      l x3 l

3y + 5x - 15 = 0
3y - 6x - 6 = 0
------------------- dikurangi
11x - 11 = 0
11x = 11
x = 1

y - 2x - 2 = 0
y - 2.1 - 2 = 0
y -2 - 2 = 0
y = 4

titik potong (x,y) = (1,4)