Correct Answer: Option D

Explanation

2x + 3y = 10 .......x2

3x - 2y = -11 ........x3

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

• What three major rivers took their sources from the western highlands? Answer this

  1 Answers   ·   Geography   ·   3 hours ago
• 1.Define chemical industry 2.List and explain types of chemical.? Answer this

  1 Answers   ·   Chemistry   ·   2 hours ago
• What is the difference between 2:45am and 12:32pm? Answer this

  2 Answers   ·   Mathematics   ·   3 years ago