tolong jawab ya kak 1 s/d 10 thx aku ksh poin 15 ya

2. Dik:
Berat badan mario = 45 1/2 = 91/2 kg
Berat badan Ucok = 37 2/5 = 187/5 kg
Dit : Selisih ...
Dij:
Selisih berat badan mario - selisih berat badan ucok
= 91/2(5) - 187/5(2)
= 455/10 - 374/10
= 81/10 kg
= 8 1/10 kg

3. 7/24 × 3/7
= 1/8 × 1/1 (disederhanakan)
= 1/8

4. 1,6 × 5,25
= 8,4

5. 2, 25 = 225/100
1 4/5 = 9/5
225/100 × 9/5
= 2025/500
= 4,05

6. 6 3/4 = 27/4
2 2/9 = 20/9
= 27/4 : 20/9
= 27/4 × 9/20
= 243/80
= 3 3/80

7. 1,24 : 0,4
= 3,1

8. 23 5/6 - 14 3/4 + 7 1/3
= 23-14+7 (5/6 (2) - 3/4 (3) + 1/3 (4))
= 16 (10/12-9/12+4/12)
= 16 5/12

9. 2 2/3 = 2,6
= 2,6 × 12,9
= 33,54

10. 1/2 : 1 1/3 × 8/9
= 1/2 : 4/3 x 8/9
= 1/2 : 32/27
= 1/2 × 27/32
= 27/64

Semoga membantu:)