Gunakan cara faktorisasi prima untuk menentukan kpk dari penyebut 1. 3/4 + 1/2 = 2. 7/8 - 1/3 = 3. 6/15 + 1/12 = 4. 7/20 - 1/15 = 5. 1/15 + 1/30 =

1. 3/4 + 1/2 = ?
? = 3/4 + 2/4
= 5/4
= 1 1/4
2. 7/8 - 1/3 = ?
? = 21/24 - 8/24
= 13/24
3. 6/15 + 1/12 = ?
? = 24/60 + 5/60
= 29/60
4. 7/20 - 1/15 = ?
? = 21/60 - 4/60
= 17/60
5. 1/15 + 1/30 = ?
? = 2/30 + 1/30
= 3/30
= 1/10
~ maaf kalau ada yang salah