Question

1.8减去3/5与2/5的积,再除以3/5,商是多少?

Answer 1

(8-3/5*2/5)÷(3/5)=194/15

(3-2/5)*1/(2/3)=39/10

（3/4+1/4）/5=1/5

(8.7-303)/1.2=-245.25

30/(4/5-1/2)=100

15*80%/30%=40