如题所述
第1个回答 2020-05-01
46✖️57➖58✖️40➕46
=46×(57+1)-58×40
=46×58-58×40
=58×(46-40)
=58×6
=348
两次乘法分配律
=46×(57+1)-58×40
=46×58-58×40
=58×(46-40)
=58×6
=348
两次乘法分配律
第2个回答 2020-05-01
46×57-58×40+46
=46×(57+1)-58×40
=46×58-58×40
=(46-40)×58
=6×58
=6×(60-2)
=6×60-6×2
=360-12
=348
=46×(57+1)-58×40
=46×58-58×40
=(46-40)×58
=6×58
=6×(60-2)
=6×60-6×2
=360-12
=348
第3个回答 2020-05-01
46✖️57➖58✖️40➕46
=46✖️(57+1)➖58✖️40
=46✖️58➖58✖️40
=(46-40)✖️58
=6✖️58
=348本回答被网友采纳
=46✖️(57+1)➖58✖️40
=46✖️58➖58✖️40
=(46-40)✖️58
=6✖️58
=348本回答被网友采纳