5分之3x=4分之3×10分之15分之3x=40分之3x=40分之3÷5分之3x=8分之1
(3/4)/(3/5)=9/20x=(9/20)*(1/10)=9/200=0.045
(3/4)/(3/5)=X/(1/10)(3/4)*(1/10)=X*(3/5) 3/40=3X/5 15=120X X=1/8
10x=3/4/3/5 10x=5/4 x=1/8