Question 13
Linear and Simultaneous EquationsFind (x − y) if 4x − 3y = 7 and 3x − 2y = 5.
- A.4
- B.3
- C.2
- D.−2
- E.−3.
Show the answer and explanation
Answer: C (2)
Explanation
Solving gives x = 1 and y = −1 (check: 4 + 3 = 7, 3 + 2 = 5), so x − y = 2.
Find (x − y) if 4x − 3y = 7 and 3x − 2y = 5.
Answer: C (2)
Solving gives x = 1 and y = −1 (check: 4 + 3 = 7, 3 + 2 = 5), so x − y = 2.