问题
解答题
先约分，再化为带分数．
|
答案
=42 24
=42÷6 24÷6
=17 4
；3 4
=60 48
=60÷12 48÷12
=15 4
；1 4
=12 8
=12÷4 8÷4
=13 2
；1 2
=60 40
=60÷20 40÷20
=13 2
；1 2
=120 50
=120÷10 50÷10
=212 5
．2 5
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