Răspuns :
((3-1/3)*(9/8))^2=(2/3*9/8)^2=(18/24)^2=(3/4)^2=9/16
3/4:(3/4-1/2)-4/9=3/4:1/4-4/9=3/4*4/1-4/9=3-4/9=(27-4)/9=23/9
3/4:(3/4-1/2)-4/9=3/4:1/4-4/9=3/4*4/1-4/9=3-4/9=(27-4)/9=23/9