Matematika

Pertanyaan

8. 4/21 x 6/15 =
9. 3 1/3 - 1 1/7 =
10. 1 2/3 = 2/7 : 4/7=
11. 2 1/3 : 3 1/7 =
12. 1 2/3 + 2/7 x 4/7 =
13. 8/11 : 6/121 =

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