第1个回答 2019-09-24
(4/5-1/2+2/3)×30
=4/5×30-1/2×30+2/3×30
=24-15+20
=29
=4/5×30-1/2×30+2/3×30
=24-15+20
=29
第2个回答 2019-09-24
(4/5-1/2+2/3)×30
= 4/5x30-1/2x30+2/3x30
= 24-15+20
=29本回答被网友采纳
= 4/5x30-1/2x30+2/3x30
= 24-15+20
=29本回答被网友采纳
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