Crilah titik potong fungsi 2x + 3y + 4 = 0 dg fungsi – 3x – 4y – 7 = 0

y=-2x/3 -4/3
y=-3x/4 -7/4
- 2x/3 -4/3 =-3x/4 -7/4
-2x/3 +3x/4= -7/4 +4/3
-8x/12 +9x/12=-21/12 +16/12
x/12=-5/12
x=-5