5又1/5-中括号2又1/6+(-4.8)-(4又

5又1/5-中括号2又1/6+(-4.8)-(4又5/6)中括号等于多少

1个回答

= 5又1/5 - [2又1/6 - 4.8 - 4又5/6]
= 5又1/5 + 115/15
= 26/5 + 115/15
= 193/15
= 12.8667