The solution of the system of simultaneous linear equations

4x - 3y = 7 and 7x + 5y = 2 is :

** Option:**

**A.**x = 1, y = 1

**B.**x = -1, y = 1

**C.**x = -1, y = -1

**D.**x = 1, y = -1

**Answer: D . x = 1, y = -1**

** Justification:**

Multiplying first equation by 5 and second by 3 and adding we get x = 1.

Putting x = 1 in 1st, we get 4 x 1 - 3y = 7 or y = -1