3x - 5y = - 9, 5x - 3y = 1 হলে, (x, y) এর মান কত?

দেয়া আছে, 
3x - 5y = - 9.............(1)
5x - 3y = 1.................(2)

(1) নং × 3  - (2) নং × 5 ⇒
9x - 15y - (25x - 15y) = - 27 - 5
9x - 15y - 25x + 15y = - 27 - 5
- 16x = - 32 
x = - 32/- 16
x = 2

(2) নং এ x এর মান বসিয়ে পাই,
5x - 3y = 1
5 × 2 - 3y = 1
10 - 3y = 1 
- 3y = 1- 10 
- 3y = - 9 
y = - 9/- 3
y = 3 

(x, y) = (2,3)