Question

1+{2+[3×(4+5)-6+7×8]-9}​

Answer 1

1+{2+[3×(4+5)-6+7×8]-9}

1+[2+(3×9-6+7×8)-9]

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

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

1+[(2+77)-9]

1+(79-9)

1+70

71

Answer 2

Răspuns:

1+{2+[3×(4+5)-6+7×8]-9}=

1+[2+(3×9-6+7×8)-9]=

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

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

1+(2+77)-9=

1+79-9=

80-9=

71