Răspuns :
(58-54÷3)÷5-3x(5+2x(21÷7x2)÷17=
=(58-18):5-3x[(5+2x3x2):17]=
=40:5-3x[(5+2x6):17]=
=8-3x(17:17)=
=8-3x1=
=8-3=
=5
=(58-18):5-3x[(5+2x3x2):17]=
=40:5-3x[(5+2x6):17]=
=8-3x(17:17)=
=8-3x1=
=8-3=
=5