tolong dong pake cara ya besok mau dikumpulkan

6.
4 ⅜ x 2 4/5
= 35/8 x 14/5
= 490/40
= 49/4
= 12 ¼
Jawaban C

7.
7/12 : 2 ⅓
= 7/12 : 7/3
= 7/12 x 3/7
= 3/12
= ¼
Jawaban C

8.
Harga buku = 100% - 15% = 85%
Jadi harga buku adalah
85/100 x Rp.30.000 = Rp.25.500
Jawaban C

9.
0,75 x ⅓ - 5% x 0,75 x ⅓
= (0,75 x ⅓) - 5% x (0,75 x ⅓)
= 0,25 - 5% x 0,25
= ¼ - (5/100 x ¼)
= ¼ - 5/400
= 100/400 - 5/400
= 95/400
= 19/80
Jawaban A