4⼀7-括号3⼀10-1⼀5括住等于多少

4/7-括号3/10-1/5括住等于多少
2025-05-15 12:43:46
推荐回答(1个)
回答1:

4/7-括号3/10-1/5括住
=4/7-(3/10-2/10)
=4/7-1/10
=40/70-7/70
=33/70