tolong di jawab ya no.11-15.pake cara

11. 1 1/2 jadikan pecahan biasa = 3/2
3/4 : 1/4= 3/2 × 4/1
= 12/2 =6
Jawabannya D

12. 1 3/7 : 4/5 × 3,25=
10/7 : 4/5 × 3,25 =
10/7 × 5/4 = 50/28
50/28 × 325/100= 16250/2800
=5 45/56
Jawabannya C

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