11. 12. 13.
14. 15. 16.
17. 18. 19.
20. 21. 22.
23. 24. 25.
26. 27. 28.
29. 30. 31.
32. 33. 34.
35. 36. 37.
38. 39. 40.
41. 42. 43.
44. 45. 46.
47. 48. 49.
50. 51. 52.
Solve each equation, and check your solution. See Examples 6 and 7.
59. 60.
61. 62.
63. 64.
65. 66.
67. 68.
Brain Busters Solve each equation, and check your solution.See Examples 6 and 7.
73.Concept Check Write an equation that requires the use of the addition property of
equality, in which 6 must be added to each side to solve the equation and the solution is
a negative number.
74.Concept Check Write an equation that requires the use of the addition property of
equality, in which must be subtracted from each side and the solution is a positive
number.
1
2912 m- 32 - 415 + 3 m 2 - 514 +m 2 =- 3417 x- 12 + 312 - 5 x 2 - 413 x+ 52 =- 6- 511 - 2 z 2 + 413 - z 2 - 713 +z 2 = 0
- 218 p+ 22 - 312 - 7 p 2 - 214 + 2 p 2 = 0
101 - 2 x+ 12 =- 191 x+ 12 212 - 3 r 2 =- 51 r- 32- 612 b+ 12 + 113 b- 72 = 0 - 513 w- 32 + 11 + 16 w 2 = 0
21 p+ 52 - 19 +p 2 =- 3 41 k- 62 - 13 k+ 22 =- 515 y+ 62 - 13 + 4 y 2 = 10 18 r- 32 - 17 r+ 12 =- 66
7
s-3
4
=
4
5
-
1
7
s+1
6
5
7
x+1
3
=
2
5
-
2
7
x+2
5
5.2q-4.6-7.1q=-0.9q-4.6 -4.0x+2.7-1.6x=-4.6x+2.76 x+ 5 + 7 x+ 3 = 12 x+ 4 4 x- 3 - 8 x+ 1 =- 5 x+ 95 t+ 3 + 2 t- 6 t= 4 + 12 4 x+ 3 x- 6 - 6 x= 10 + 33 x+ 7 - 2 x= 0 5 x+ 4 - 4 x= 01
5
x+ 7 =-4
5
x1
2
x+ 5 =-1
2
1.2y- 4 =0.2y- 4 7.7r- 6 =6.7r- 6 x1.9t- 6 =0.9t 5 p= 4 p 8 z= 7 z5.6x+ 2 =4.6x 9.1x+ 5 =8.1x 1.4x- 3 =0.4x2
7
z- 2 =9
7
z2
5
w- 6 =7
5
- 6 x+ 3 =- 7 x+ 10 w
8 t+ 6 = 7 t+ 6 13 t+ 9 = 12 t+ 9 - 4 x+ 7 =- 5 x+ 98 t+ 5 = 7 t 3 x+ 7 = 2 x+ 4 9 x+ 1 = 8 x+ 43 x= 2 x+ 7 5 x= 4 x+ 9 10 x+ 4 = 9 xx-15.5=-5.1 t+12.3=-4.6 x+21.5=-13.4- x-8.4=-2.1
1
4
=x-2
3
-
1
3
=x-3
5
5 =z+ 19 - 4 =x- 14 - 7 =x- 227 +r=- 3 8 +k=- 4 2 =p+ 15x+2
3
=-
1
6
x+1
4
=-
1
2
x+ 47 = 26r+ 8 = 12 x+ 7 = 11 x+ 28 = 19