Answer:
13. no solution
15. 3
16. 2
17. 5
18. -8
19. -7
20. 6
21. -5
22. -7
x = 3
Step-by-step explanation:
Given the 2 equations
x + y = 3 → (1)
2x - y = 6 → (2)
Adding the 2 equations term by term eliminates the y- term, that is
3x = 9 ( divide both sides by 3 )
0.16
