Question: solve the simultaneous equation x+y=5. 3x-2y=1.
x + y = 5 ---------------------- (1)
3x - 2y = 1 ------------------- (2)
Multiply (1) by3.
3x + 3y = 15 ----------------- (3)
3x - 2y = 1 ------------------- (4)
Subtract (4) from (3).
5y = 14
y = 14/5
From (1), x = 5 - 5 = 5 - 14/5 = 11/5
Answer: x = 11/5, y = 14/5