Fundamentals of Mathematics, 2008a

299
Exercise 5.2.17 (Solution on p. 329.)
5
12 + 7
12
Exercise 5.2.18
11
16 − 2
16
Exercise 5.2.19 (Solution on p. 329.)
3
16 − 3
16
Exercise 5.2.20
15
23 − 2
23
Exercise 5.2.21 (Solution on p. 329.)
1
6 − 1 6
Exercise 5.2.22
1
4 + 1 4 + 1 4
Exercise 5.2.23 (Solution on p. 329.)
3
11 + 1
11 + 5
11
Exercise 5.2.24
16
20 + 1
20 + 2
20
Exercise 5.2.25 (Solution on p. 329.)
12
8 + 2 8 + 1 8
Exercise 5.2.26
1
15 + 8
15 + 6
15
Exercise 5.2.27 (Solution on p. 329.)
3
8 + 2 8 − 1 8
Exercise 5.2.28
11
16 + 9
16 − 5
16
Exercise 5.2.29 (Solution on p. 329.)
4
20 − 1
20 + 9
20
Exercise 5.2.30
7
10 − 3
10 + 11
10
Exercise 5.2.31 (Solution on p. 329.)
16
5 − 1 5 − 2 5
Exercise 5.2.32
21
35 − 17
35 + 31
35
Exercise 5.2.33 (Solution on p. 329.)
5
2 + 16 2 − 1 2
Exercise 5.2.34
1
18 + 3
18 + 1
18 + 4
18 − 5
18
Exercise 5.2.35 (Solution on p. 329.)
6
22 − 2
22 + 4
22 − 1
22 + 11
22
The following rule for addition and subtraction of two fractions is preposterous. Show why by performing
the operations using the rule for the following two problems.
Preposterous Rule
To add or subtract two fractions, simply add or subtract the numerators and place this result over the sum
or dierence of the denominators.
Exercise 5.2.36
3
10 − 3
10
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