如题所述
第1个回答 2020-03-18
原式=369×78-123×3×8
=369×(78-8)
=369×70
=25830
=369×(78-8)
=369×70
=25830
第2个回答 2020-03-18
=123【(3*78)-24】
=123(234-24)
=123*210
=123(200+10)
=24600+1230
=25830
=123(234-24)
=123*210
=123(200+10)
=24600+1230
=25830
第3个回答 2020-03-18
=123×3×78-123×24
=123×(3×78-24)
=123×210
25830
=123×(3×78-24)
=123×210
25830