7⼀13除7加1⼀7乘6⼀13=()

简便运算
2024-11-16 23:41:25
推荐回答(1个)
回答(1):

7/13÷7+1/7x6/13
=7/13x1/7+6/13x1/7
=(7/13+6/13)x1/7
=1x1/7
=1/7