Given that 2x + 3y – 10 = 0 and 3x = 2y – 11, calculate the value of (x – y).
- 5
- 3
- - 3
-
- 5
The correct answer is: D
Explanation
2x + 3y = 10 .......1
3x - 2y = -11 ........2
4x + 6y = 20
9x - 6y = -33
\(\overline{\frac{13x}{13} = \frac{-13}{13}}\), x = 1
from
2x + 3y = 10
2(-1) + 3y = 10
-2 + 3y = 10
3y = 10 + 2
\(\frac{3y}{3} = \frac{12}{3}\), y = 4
x - y = -1 - 4
= - 5