2 5\8b+3 1\4 при b=2 2\3

Question

2 5\8b+3 1\4 при b=2 2\3

Answer 1

2 5/8= 21/8
3 1/4=13/4
2 2/3=8/3

21/8*8/3+13/4=7+13/4= 28/4+13/4=41/4= 10 1/4