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(7/10+4/3)乘以5;135乘以8/9乘以3/4;6/11乘以7/8-6/8乘以6/11

来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/19 21:57:05
(7/10+4/3)乘以5;135乘以8/9乘以3/4;6/11乘以7/8-6/8乘以6/11
(7/10+4/3)乘以5;135乘以8/9乘以3/4;6/11乘以7/8-6/8乘以6/11
楼主说是3/4的
(7/10+3/4)×5
=7/10×5+3/4×5
=7/2+15/4
=29/4
135×8/9×3/4
=135×(8/9×3/4)
=135×2/3
=90
6/11×7/8-6/8×6/11
=6/11×(7/8-6/8)
=6/11×1/8
3/44