Basic Mathematics for College Students

Evaluate each expression.See Example 2.

19.

20.

21.

22.

Evaluate each expression.See Example 3.

Add to the difference of and.

Evaluate the formula for the given values. See Example 5.

27.

28.

29.

30.

Simplify each complex fraction.See Example 6.

1

3

4

1

6

1

3

1 3 3 4 1 6 2 3

1

2

7

8

3

4

1

2

1

4

2

3

5

6

2

3

1

5

8

15

5

8

3

4

2

11

3

4

1

16

2

5

a 1

1

3

, b 4

2

3

, h 2

2

5

a 1

1

4

, b 6

3

4

, h 4

1

2

a 4

1

2

, b 5

1

2

, h 2

1

8

a 2

1

2

, b 7

1

2

, h 5

1

4

A^12 h(ab)

1

2

4

5

1

19

30

1

2

7

9

2

7

18

1

6

3

4

8

5

24

2

3

5

6

5

4

15

a

19

36

1

6

ba 8

2

3

b

a

15

16

1

8

ba 9

3

4

b

a

7

8

3

7

ba 1

3

7

b

a

3

4

1

6

ba 2

1

6

b

Evaluate each expression and simplify each complex fraction.

43.

44.

45.

46.

for and

for , , and

49.

50.

51.

52.

53.

54.

Add to the difference of and

Add to the difference of and 9

11

15

11.

3

5

18

1

3

7

8

5.

1

6

12

11

12

2

5

1

4

2

5

1

4

3

8

1

4

3

8

1

4

3

16

a

1

2

b

3

4

5

a

1

3

b

2

7

8

a

1

8

ba

2

3

b

2

3

a

1

4

b

1

2

Vlwh l 12 w 8 12 h 3 31

A 21 bh b 10 h 7 51

5

27

5

9

14

15

7

10

a

5

4

b

2 a

2

3

2

1

6

b

7

8

a

4

5

1

3

4

b

TRY IT YOURSELF

6

2

7

6

2

3

4

7

8

3

1

4

3

4

1

7

8

5

6

1

12

292 Chapter 3 Fractions and Mixed Numbers