中科新闻网鸢尾花数据集iris.csv:帮我做数学`做对1个给5分`{小学的题目哦`}
来源：百度文库 编辑：中科新闻网 时间：2024/05/02 19:27:42
用简便方法计算
5分之1乘27+5分之3乘41
=
=
=
=
（9又7分之2 ）除以（7分之5+9分之5）
=
=
=
=
5分之1乘27+5分之3乘41
=
=
=
=
（9又7分之2 ）除以（7分之5+9分之5）
=
=
=
=
=27/5+123/5
=(27+123)/5
=150/5
=30
------------------------------------------------
=(65/9)/[(45+35)/63]
=(65/9)/(80/63)
=65*63/9*80
=91/16
5分之1乘27+5分之3乘41
= 5分之1乘(27+3乘41 )
= 5分之1乘150
= 30
（9又7分之2 ）除以（7分之5+9分之5）
=（ 65/7）/(45+35)/(7*9)
= (65/7)*(7*9)/80
= 5*13*9/16*5
=117/16=7又16分之15
5分之1乘27+5分之3乘41
=5分之(27+123)
=5分之150
=30
（9又7分之2 ）除以（7分之5+9分之5）
=（9又7分之2 ）除以(63分之80)
=(7分之65)乘以(80分之63)
=112分之819
=1/5*27+3/5*41
=(27+123)/5
=150/5
=30
=(65/9)/[(45+35)/63]
=(65/9)/(80/63)
=65*63/9*80
=91/16
=27/5+123/5
=(27+123)/5
=150/5
=30
------------------------------------------------
=(65/9)/[(45+35)/63]
=(65/9)/(80/63)
=65*63/9*80
=91/16
(不是很难,,应该自己做的哦!!)
1/5*27+3/5*41
=(1*27+3*41)/5
=(27+121)/5=150/5
=30
(9+2/7)/(5/7+5/9)
=[(63+2)/7]/[(5*9+5*7)/7*9]
=65/7*7*9/[5*(7+9)]
=117/16