Question

1+{2+[3⋅(4+5)−6+7⋅8]−9}​

Answer 1

Răspuns:

1+{2+[3×(4+5)−6+7×8]−9}=71

Explicație pas cu pas:

1+{2+[3×(4+5)−6+7×8]−9}=

1+[2+(3×9-6+56)-9]=

1+[2+(27-6+56)-9]=

1+[2+(21+56)-9]=

1+(2+77-9)=

1+(79-9)=

1+70=

71