Question

a×9分之5=b×4分之3=c÷6分之5=d×1=e÷4分之7(a,b,c,d,e都大于0.)请把a,b,c,d,e按从

Answer 1

a × (5/9) = b × (3/4) = c ÷(5/6) = e÷(7/4)

即：a × (5/9) = b × (3/4) = c ×（6/5) = e ×(4/7)

令 a × (5/9) = b × (3/4) = c ×（6/5) = e ×(4/7) = k

则有：a = ( 9/5)k = (108/60)k b = (4/3)k = (80/60)k

c = (5/6) k =(50/60)k d = (7/4)k = (105/60)k

所以：a > d > b > c