Question

Can someone please convert these unlike fractions to equivalent like fractions and add them. And I have to use the LCD to get the answer correct. If possible, reduce the final sum.

Answer 1

Hey there! :)

1st picture:

Change to common denominator:12

1 · 3 = 3
4 · 3 = 12

5 · 1 = 5
12 · 1 = 12

3 + 5 = 8 = 2
12 12 = 12 = 3

2nd picture:

Change to common denominator: 14

1 · 2 = 2
7 · 2 = 14

3 · 1 = 3
14 · 1 14

2 + 3 = 5
14 14 14

3rd picture:

Change to common denominator: 15

1 · 3 = 3
5 · 3 = 15

2 · 5 = 10
3 · 5 = 15

10 + 3 = 13
15 15 = 15