Question

937 б в
......,..............

Answer 1

б)
1/2÷3/8=1/2×8/3=4/3
4/9÷3/5=4/9×5/3=20/27
4/3-20/27=36/27-20/27=16/27

в)
3/5×8/9=8/15
9/10-8/15=27/30-16/30=
=21/30=7/10
3/5÷7/10=3/5×10/7=6/7