Răspuns:
1/4 ÷⟦1 1/4 -2/3(1,5²-1,5)=1/4 ÷(5/4-2/3·75/100)=1/4÷(5/4-150/300)=1/4÷(5/4-1/2)= 1/4÷(5/4-2/4)=1/4÷3/4=1/4·4/3=1/3