Răspuns :
{[(x:2):3]}:5=25;
(x:2):3=25×5;
(x:2):3=125;
x:2=125×3;
x:2=375;
x=375×2;
x=750;
(x:2):3=25×5;
(x:2):3=125;
x:2=125×3;
x:2=375;
x=375×2;
x=750;
{[(x÷2)÷3]}÷5=25
(x÷2)÷3=25×5
(x÷2)÷3=125
x÷2=125×3
x÷2=375
x=375×2
x=750
(x÷2)÷3=25×5
(x÷2)÷3=125
x÷2=125×3
x÷2=375
x=375×2
x=750