Page 79 - Math Course 1 (Book 1)

Unlike Fractions

Your Turn! MO. 2 - L5b

Add Unlike Fractions

2 1 Subtract Unlike Fractions
Find +
3 8
7
A.
11 Key Concept

B. 1 Subtracting Unlike Fractions
8

To subtract fractions with unlike denominators,
C. 13 rename the fractions with a common denominator.
24 Then subtract and simplify as with like fractions.

19
D.
24
Let’s Begin

Answer

Add Fractions and Mixed Numbers Subtract Fractions and Mixed
Numbers
5 5
Find + . Write in simplest form.
12 9 Examples
1
A. 1
24
Find 9 - 5 . Write in simplest form.
35 16 8
B.
36
9 5 9 5 2 The LCD is 16.
10 - = -
C. 16 8 16 8 2
21
5 = 9 - 10 Rename using the
D. - 16 16
36 LCD.

Answer
Answer =-1 1 Subtract
16
)
Find 4 2 + -6 2 ) . Write in simplest form.
5 3 2 6
Find 4 -3 . Write in simplest form.
1 3 7
A. 11
15
4 2 -3 6 = 14 27 Write as improper
-
2 3 7 3 7 fraction.
B. -2
5 14 7 27 3 Rename using the
= -
3 7 7 3 LCD.
4
C. -2
15 98 81
= - Simplify.
21 21
D. -2 14
15
Answer = 17 Subtract
Answer 21

71