Răspuns:
[12+3×(4÷4)×3]÷7÷3=
[12+3×3]÷7÷3=
(12+9)÷7÷3=
21÷7÷3=3÷3=1
Explicație pas cu pas:
[ 12 + 3 × ( 16 : 4 : 4 ) × 3 ] : 7 : 3 =
= [ 12 + 3 × ( 4 : 4 ) × 3] : 7 : 3 =
= ( 12 + 3 × 1 × 3 ) : 7 : 3 =
= ( 12 + 3 × 3 ) : 7 : 3 =
= ( 12 + 9 ) : 7 : 3 =
= 21 : 7 : 3 =
= 3 : 3 =
= 1
