简便计算:5/9×7/12+5/12÷7/5 九分之五乘十二分之七加十二分之五除五分之七

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 14:09:05
简便计算:5/9×7/12+5/12÷7/5 九分之五乘十二分之七加十二分之五除五分之七
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简便计算:5/9×7/12+5/12÷7/5 九分之五乘十二分之七加十二分之五除五分之七
简便计算:5/9×7/12+5/12÷7/5 九分之五乘十二分之七加十二分之五除五分之七

简便计算:5/9×7/12+5/12÷7/5 九分之五乘十二分之七加十二分之五除五分之七
5/9×7/12+5/12÷7/5
=5/9×7/12+5/12×5/7
=5/12(7/9+5/7)
=5/12*93/63
=5/12*31/21
=155/252

等于10--------------------------