3/5x=24/25
x=24/25*5/3
x=8/5;
x÷5/12=6/11
x=6/11*5/12
x=5/22;
3/8x=5/32
x=5/32*8/3
x=5/12.直接写出答案；3/10÷3/4=？5/6÷4/5=？7/39÷49/13=？3/10÷3/10=？2/5÷1/5=？1/3÷1/7=？9/14÷15/28=？快快，现在就要啊~！2/5;25/24; 13/273; 1; 2;7/3;6/5