Răspuns :
450-{99+[120÷(720÷20+120÷5)]×38+3×8}×2=
450-{99+[120÷(36+24)]×38+3×8}×2=
450-{99+[120÷60]×38+3×8}×2=
450-[(99+2)×38+3×8]×2=
450-(101x38+24)x2=
450-(3838+24)x2=
450-3862x2=450-7724=-7274
450-{99+[120÷(720÷20+120÷5)]×38+3×8}×2=
= 450-{99+[120÷(36+24)]×38+3×8}×2
= 450-[99+(120÷60)]×38+3×8}×2
= 450-[(99+2)×38+3×8]×2
= 450-(101x38+24)x2
= 450-(3838+24)x2
= 450-3862x2
= 450-7724
= -7274
Exercițiul nu îi bun!