7又 1/2*8
=7.5*8
=60
13/9*12.5*0.032+5.95/ 5/8-7.2+6.05*3 又3/5
=13/9*(12.5*0.08)*0.4+1.19*8-7.2+6.05*3.6
=13/9*0.4+(9.52+21.78)
=26/45+21.3
=21又79/90
7又 1/2*8
=7.5*8
=60
13/9*12.5*0.032+5.95/ 5/8-7.2+6.05*3 又3/5
=13/9*(12.5*0.08)*0.4+1.19*8-7.2+6.05*3.6
=13/9*0.4+(9.52+21.78)
=21又79/90
回答完毕