6又1/2*8又2/3÷3又1/3÷2又2/5
=13/2*26/3×3/10×5/12
=169/24
=7又24分之1
8又3/5÷(1又3/4-1又2/5)
=43/5÷(7/4-7/5)
=43/5÷7*(1/4-1/5)
=43/5÷7/20
=43/5×20/7
=172/7
=24又7分之4
你仔细检查题目,两个题目可能都写错了一个数,记得采纳了,赞同一下。
6又1/2*8又2/3÷3又1/3÷2又2/5
=(13/2*26/3)*(3/10*5/12)
=169/3*1/8
=169/24
8又3/5÷(1又3/4-1又2/5)
=43/5÷7/20
=43/5×20/7
=172/7
7.04 24.57