Solve the following system of equation using the method of substitution. Show the work that leads to your answer.
y=-2x-10
2x + 5y = 6

Step-by-step explanation:

y = -2x - 10       (I)

2x + 5y = 6      (II)

Substitute y = -2x - 10 in equation (II)

2x + 5 (-2x -10) = 6

2x  + (-2x) *5 + (-10) *5 = 6

2x - 10x - 50 = 6

-8x - 50 = 6

        -8x = 6 + 50

       -8x = 56

          x = 56/-8

x = -7

Plugin x = -7 in equation (I)

y = -2*(-7) - 10

  = 14 - 10

y = 4

1. 3.4/4

2. 0.8/7

3. 0.5 x 3

4. 0.9 x 6

5. 10.8

6. 2.35

7. 0.567

8. 9.35

9. 0.02

10. 0.06

11. 0.16

12. 0.42

13. 0.63

14. 5.6

15. 8.1

16. 9.9

17. 0.28

18. 0.48

19. 0.27

20. 0.49

21. 0.45

22. 0.72

23. 0.9

24. 0.88

25. 0.75

26. 0.16

27. 0.328

28. 0.495

29. 0.72

30. 1.068