1. Simultaneous Equations

8. 6 7 8 9 Width 4 3 2 1 Length 1 2 3 4 5 9 8 7 6 5

10. Length>Width 6 7 8 9 Width 4 3 2 1 Length 1 2 3 4 5 9 8 7 6 5

11. Length>Width 6 7 8 9 Width 4 3 2 1 Length 1 2 3 4 5 9 8 7 6 5

13. Length = 4 x Width 6 7 8 9 Width 4 3 2 1 Length 1 2 3 4 5 9 8 7 6 5

14. Length = 4 x Width 6 7 8 9 Width 4 3 2 1 Length 1 2 3 4 5 9 8 7 6 5

21. Total $10 Coins $5 Coins Value Number

22. Total y $10 Coins x $5 Coins Number

23. x+y Total y $10 Coins x $5 Coins Number

24. x+y Total y $10 Coins x $5 Coins Value Number

25. x+y Total 10y y $10 Coins 5x x $5 Coins Value Number

26. 5x+10y x+y Total 10y y $10 Coins 5x x $5 Coins Value Number

27. 140 19 Total 10y y $10 Coins 5x x $5 Coins Value Number

28. 5x+10y=140 x+y=19 Total 10y y $10 Coins 5x x $5 Coins Value Number

30. Total Tart Cake Eggs used Number

31. Total y Tart x Cake Eggs used Number

32. x+y Total y Tart x Cake Eggs used Number

33. x+y Total y/2 y Tart 2x x Cake Eggs used Number

34. 2x+y/2 x+y Total y/2 y Tart 2x x Cake Eggs used Number

35. 22 20 Total y/2 y Tart 2x x Cake Eggs used Number

36. 2x+y/2=22 x+y=20 Total y/2 y Tart 2x x Cake Eggs used Number

38. X Y 20

39. 22 2X Y/2

40. x+y=20 2x+y/2=22

43. Total Lose Win Number

44. Total Lose a Win Number

45. Total b Lose a Win Number

46. a+b Total b Lose a Win Number

47. a+b Total b Lose a Win Points Number

48. a+b Total b Lose 3a a Win Points Number

49. a+b Total 1b b Lose 3a a Win Points Number

50. 3a+b a+b Total 1b b Lose 3a a Win Points Number

51. 3a+b=92 a+b=38 Total 1b b Lose 3a a Win Points Number

56. Method of Substitution

62. 2(x+y) = 20 x = 4y 2(4y+y) = 20

63. OR 3x-2y=12 2x+y=1 3x-2y=12 y=1-2x 3x-2y=12 x=(1-y)/2

67. Method of Elimination $14.8 $18

69. $18 $14.8 $3.2

70. $ ??

71. $18 $3.2

72. $18 $3.2 $3.2 $11.6

73. $3.2 $11.6