12又1⼀3+(7又2⼀5+5又2⼀7)÷3又2⼀3+2又1⼀5+1又4⼀7的和等于多少?

2024-11-22 21:19:02
推荐回答(1个)
回答(1):

12又1/3+(7又2/5+5又2/7)÷3又2/3+2又1/5+1又4/7的和等于多少?
=12又1/3+(37/5+37/7)x3/11+2又1/5+1又4/7
=37/3+111/55+111/77+11/5+11/7
=37/3+111/55+111/77+121/55+121/77
=37/3+232/55+232/77
=37/3+1624/385+1160/385
=37/3+2784/385
=14245/1155+8352/1155
=22597/1155