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INSTRUCTOR’S
S
OLUTIONS MANUAL
B
EGINNING ALGEBRA
NINTH EDITION
John Tobey North Shore Community College Danvers, Massachusetts Jeffrey Slater North Shore Community College Danvers, Massachusetts Jamie Blair Orange Coast College Costa Mesa, California Jennifer Crawford Normandale Community College Bloomington, Minnesota
Delhi Mexico City São Paulo Sydney Hong Kong Seoul Singapore Taipei Tokyo 1 / 4
Contents
Chapter 0 1 Chapter 1 18 Chapter 2 37 Chapter 3 71 Chapter 4 92 Chapter 5 114 Chapter 6 135 Chapter 7 165 Chapter 8 198 Chapter 9 232 Chapter 10 256 Practice Final Examination 287 2 / 4
Copyright © 2017 Pearson Education, Inc.1 Chapter 0 0.1 Exercises 2.13
:
17 17 is the denominator
4. 1:
317 or 317
6.3 3 4
8.
20 5 4 5
24 4 6×
== 6×
10.8181
48 6 8 6×
== ×
12.
72 18 4
4
18 18 1×
== ×
14.
32 32 1 1
64 32 2 2×
== ×
16.
33 11 3 3
55 11 5 5×
== ×
18.
63 9 7 7
81 9 9 9×
== ×
20.== 3 19 4 519 3 55 15 4 22.7 54 5 754 7 77 49 5 ==
24.== 6 41 5 641 6 66 36 5 26.8 25 1 325 8 33 24 1 ==
28.11 79 2
779 11
77 7 09 7 2 ==
30.15
124 4 1
8 124 15 15
882 8 44 40 4 === 32.×+ +
===2(45)220222
4 55 55
34.×+ +
===1 (5 12) 1 60 1 61
5
12 12 12 12
36.
5(16)56511
1
66 66×+ +
===
38.
2(63)218220
6
33 33×+ +
===
40.
1 (10 9) 1 90 1 91
10
99 99×+ +
===
42.78 78 6 6 =÷ 13 678 6 18 18
78 13 6
= 3 / 4
Chapter 0: A Brief Review of Arithmetic Skills ISM: Beginning Algebra
- Copyright © 2017 Pearson Education, Inc.
44.× = ⇒ = ×
5? 5630
954 9654
46.× = ⇒ = ×
5? 5525
945 9545
48.× = ⇒ = ×
13 ? 13 3 39
17 51 17 3 51
50.
10 ? 10 4 40
15 60 15 4 60×
= ⇒ = × 52.
7? 7535
840 8540×
= ⇒ = × 54.
45 ? 45 2 90
50 100 50 2 100×
= ⇒ = × 56.
20 5 4 5
4241064106×
== ×
58.
1400 70 20 70
2420 121 20 121×
== ×
60.= ++ 33 is raisins 131 5
62.+ =
++13 4
131 5 does not contain nuts 64.66323
68 14 72 7×
== = +×
3 7 of the students enrolled in 1994 were male.Classroom Quiz 0.1 1.
56 7 8 7
88 11 8 11×
== ×
2.
11 (5 14) 11 70 11 81
5
14 14 14 14×+ +
⇒ ==
3.109 1 9 12 12 = 9
12 109
108 1
0.2 Exercises
- You must change the fractions to equivalent
fractions with a common denominator.
4.21 17 and 30 20
30 = 2 ⋅ 3 ⋅ 5
20 = 2 ⋅ 2 ⋅ 5
LCD = 2 ⋅ 2 ⋅ 3 ⋅ 5 = 60
6.51 and 18 24
18 = 2 ⋅ 3 ⋅ 3
24 = 2 ⋅ 2 ⋅ 2 ⋅ 3
LCD = 2 ⋅ 2 ⋅ 2 ⋅ 3 ⋅ 3 = 72
8.57 and 16 48
16 = 2 ⋅ 2 ⋅ 2 ⋅ 2
48 = 2 ⋅ 2 ⋅ 2 ⋅ 2 ⋅ 3
LCD = 2 ⋅ 2 ⋅ 2 ⋅ 2 ⋅ 3 = 48
10.11 7 and 12 20
12 = 2 ⋅ 2 ⋅ 3
20 = 2 ⋅ 2 ⋅ 5
LCD = 2 ⋅ 2 ⋅ 3 ⋅ 5 = 60
12.78 and 30 45
30 = 2 ⋅ 3 ⋅ 5
45 = 3 ⋅ 3 ⋅ 5
LCD = 2 ⋅ 3 ⋅ 3 ⋅ 5 = 90
14.13 9 , , and
714 35
- = 7
14 = 2 ⋅ 7
35 = 5 ⋅ 7
LCD = 2 ⋅ 5 ⋅ 7 = 70
16.35 11 ,, and
812 42
8 = 2 ⋅ 2 ⋅ 2
12 = 2 ⋅ 2 ⋅ 3
42 = 2 ⋅ 3 ⋅ 7
LCD = 2 ⋅ 2 ⋅ 2 ⋅ 3 ⋅ 7 = 168
- / 4
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