3/4-0.6×(2又5/12-1.75) 混合运算

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3/4-0.6×(2又5/12-1.75)混合运算3/4-0.6×(2又5/12-1.75)混合运算3/4-0.6×(2又5/12-1.75)混合运算=3/4-3/5×(2又5/12-1又3/4)=3

3/4-0.6×(2又5/12-1.75) 混合运算
3/4-0.6×(2又5/12-1.75) 混合运算

3/4-0.6×(2又5/12-1.75) 混合运算
=3/4-3/5×(2又5/12-1又3/4)
=3/4-3/5×2/3
=3/4-2/5
=7/20

3/4-0.6×(2又5/12-1.75)
=3/4-0.6×2/3
=0.75-0.4
=0.35

=3/4-0.6×29/12+0.6×1.75
=0.75-1.45+1.05
=0.35

3/4-3/5(2又5/12-1又3/4)
=3/4-3/5*8/12
=3/4-2/5
=7/20