Gimana y carany, tolong bantuin donk..Yg no 12

mapel : matematika
bab : pecahan

12.)
1/4 ÷ 3/5
= 1/4 × 5/3
= 5/12

jawaban A.

13.)
1 1/2 + 4/12 × 2 1/3 - 3/6
= 3/2 + 1/3 × 7/3 - 1/2
= 3/2 + 7/9 - 1/2
= 3/2 - 1/2 + 7/9
= 2/2 + 7/9
= 18/18 + 14/18
= 32/18
= 1 14/18
= 1 7/9

jawaban D.
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