(1/4-1/15*2)÷2/5、4/7*(1÷3/4-3/4÷1)简算
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(1/4-1/15*2)÷2/5、4/7*(1÷3/4-3/4÷1)简算
![(1/4-1/15*2)÷2/5、4/7*(1÷3/4-3/4÷1)简算](/uploads/image/z/17412825-57-5.jpg?t=%EF%BC%881%2F4-1%2F15%2A2%EF%BC%89%C3%B72%2F5%E3%80%814%2F7%2A%EF%BC%881%C3%B73%2F4-3%2F4%C3%B71%EF%BC%89%E7%AE%80%E7%AE%97)
(1/4-1/15*2)÷2/5
=(1/4-2/15)x5/2
=1/4x5/2-2/15x5/2
=5/8-1/3
=7/24
4/7*(1÷3/4-3/4÷1)
=4/7x(4/3-3/4)
=4/7x7/12
=1/3
=(1/4-2/15)x5/2
=1/4x5/2-2/15x5/2
=5/8-1/3
=7/24
4/7*(1÷3/4-3/4÷1)
=4/7x(4/3-3/4)
=4/7x7/12
=1/3
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