Răspuns:
x/y=3/4=> y= (4x)/3
y/(2x-y)= (4x/3)/(2x- 4x/3) amplific cu 3 pe 2x
=(4x/3)/((6x-4x)/3)= (4x/3)/(2x/3)= (4x/3)×(3/2x) reduc 3 cu 3 si raman cu 4x/2x =2
raspuns:b)