A=2×2×3×m,B=2×n×3,如果A和B的最大公因数是12,最小公倍数是60,则m= ,n= .
6÷ =0.75= %= : =.
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25%==8: =3÷ = .
= %=12÷ =9: .
: ==75%= (小数)=.