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13/14除以15/28乘5/8加1/4等于多少

=13/14*28/15*5/8+1/4 =13/12+1/4 =1+1/12+3/12 =1+4/12 =1又1/3

4-5/14÷15/28用递等式计算 =4-5/14x28/15 =4-2/3 =3又1/3

3/14÷15/28 =3/14 X 28/15 =(3X28)/(14X15) =2/5

等于4分之7

13/14÷15/28×5/8+1/4 =13/14×28/15×5/8+1/4 =13/12+1/4 =4/3 确定

14分之3/28分之15生意5/8加上1/4 =3/14*28/15*5/8+1/4 =1/4+1/4 =1/2

(28+14/15)÷14/15 =28÷14/15+14/15÷14/15 =28x15/14+1 =30+1 =31

x=15/28×4/5 x=3/7

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