Page 84 - MarceAlgebra Demystified

CHAPTER 4 Negative Numbers 71

Adding and Subtracting Fractions (Again)

Remember to convert a mixed number to an improper fraction before sub-
tracting.

Practice

4 2
1: þ ¼
5 3
1 1
2: 2 3 ¼
8 4
2 1
3: 4 1 ¼
9 2
5
4: 2 ¼
36
6 2 14
5: þ ¼
25 3 15
4 5 8
6: þ ¼
3 6 21

4 1 6
7: 1 3 1 ¼
5 2 7

Solutions

4 2 4 3 2 5 12 10 12 þ 10 2
1: þ ¼ þ ¼ þ ¼ ¼
5 3 5 3 3 5 15 15 15 15

17 13 17 13 2 17 26 17 26 9
1 1
2: 2 3 ¼ ¼ ¼ ¼ ¼
8 4 8 4 8 4 2 8 8 8 8
38 3 38 2 3 9 76 27
2 1
3: 4 1 ¼ ¼ ¼
9 2 9 2 9 2 2 9 18 18
76 27 103
¼ ¼
18 18
5 5 2 36 5 72 5 72 67
4: 2 ¼ ¼ ¼ ¼
36 36 1 36 36 36 36 36