tolong ya pake cara no 9-13 basok mau dikumpul

9. 12 1/4 - 10 + 1 1/2 = 49/4 - 40/4 + 6/4 = 14/4 = 3 3/4

10. 4,25 + 6,09 - 1,75 = 10,34 - 1,75 = 8,59

11. 4 x 2 1/2 = 4 x 1 = 4

12. 27,5% x 10 = 275/1000 x 10 = 275/100 = 2,75

13. 60 % = 60/100 = 3/5

9)12 1/4-10+1 1/2
=(12-10)
=2 1/4 + 1 1/2
=9/4 + 3/2
=9/4 + 6/4
=15/4 =3 3/4
10)4,25 + 6,09 - 1,75
=(4,25+6,09)-1,75
=10,34-1,75
=8,59
11)4.2 1/2 = 8.1/2
=4
12)27,5%.10=27,5%=0,275.10=27,5

13)60/100=6/10=3/5

sorry kalau salah nervest soalnya