如题所述
3/4×1/2+3/2×0.75
=3/4×(1/2+3/2)
=3/4×4/2
=3/2
=3/4×(1/2+3/2)
=3/4×4/2
=3/2
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第1个回答 2016-11-24
3/4×1/2+3/2×0.75
=3/8+9/8
=3/2
=1又2分之1
=3/8+9/8
=3/2
=1又2分之1