nomor 8,9,10tolong pake cara

8. 2 - 35% - 0,45 - 0,25
= 200/100 - 35/100 - 45/100 - 25/100
= 95/100
= 19/20
9. 6¾ + 4¼ - (4 × 5,75) + 2,50
= 6¾ + 4¼ - 23 + 25/100
= 6 75/100 + 4 25/100 - 23 + 25/100
= -11 75/100
= -11 ¾
10. 5,50 : 2,15 + 2,20 - 2,10
= 550/100 : 215/100 + 2 20/100 - 2 10/100
= 550/100 × 100/215 + 2 20/100 - 2 10/100
= 110/43 + 2 20/100 - 2 10/100
= 2 24/43 + 2 20/100 - 2 10/100
= 2 2400/4300 + 2 860/4300 - 2 430/4300
= 2 2830/4300
= 2 283/430
Smoga membantu, maaf klu salah