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450-{99+[120÷(720÷20+120÷5)]×38+3×8}×2=​

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!