如题所述
第1个回答 2020-04-04
50.8-0.8X（0.7+23）=50.8-0.56-0.8X（20+3）=50.8-0.56-16-2.4=31.84。望采纳
第2个回答 2020-04-04
50.8-0.8×23.7
=50.8-1×23.7+0.2×23.7
=50.8-23.7+4.74
=27.1+4.74
=31.84本回答被网友采纳
=50.8-1×23.7+0.2×23.7
=50.8-23.7+4.74
=27.1+4.74
=31.84本回答被网友采纳
