Explicație pas cu pas:
(5313:231+17):4+3[34782:341-4(676:169+21)]
(23+17):4+3[102-4(4+21)]=
40:4 +3 ×(102-4×25)=
10 + 3 x (102-100)=
10 + 3 x2 = 10+ 6= 16