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(12/7+24/19)÷24/19

来源:学生作业帮 编辑:拍题作业网作业帮 分类:数学作业 时间:2024/06/05 02:23:47
(12/7+24/19)÷24/19
5/16×(8/5+4/5)×8/1
(9/5-18/5)÷9/5
{16/15+(16/7-8/3)}÷4/1
9/4÷{5/4-(5/1+3/1)}
(12/7+24/19)÷24/19
=(12/7+24/19)×19/24
=12/7×19/24+24/19×19/24
=19/14+1
=1又19/14
5/16×(8/5+4/5)×8/1
=5/16×8/1×(8/5+4/5)
=5/2×8/5+5/2×4/5
=4/1+2/1
=4/3
(9/5-18/5)÷9/5
=(9/5-18/5)×5/9
=9/5×5/9-18/5×5/9
=1-2/1
=2/1
{16/15+(16/7-8/3)}÷4/1
={16/15+(16/7-8/3)}×4
=16/15×4+16/7×4-8/3×4
=4/15+4/7-2/3
=2/11-2/3
=4
9/4÷{5/4-(5/1+3/1)}
=9/4÷{5/4-5/1-3/1}
=9/4÷{5/3-3/1}
=9/4÷15/4
=3/5