20 - 10 : 5 + 5 = 23
= 20 - 2 + 5 =
= 18 + 5 =
= 23
( 4 + 3 × 6 ) : ( 5 + 6 ) = 2
= ( 4 + 18 ) : 11 =
= 22 : 11=
= 2
84 - 8 : 4 + 2 × 15 : 3 = 92
= 84 - 2 + 30 : 3 =
= 82 + 10 =
= 92
( - 1 )² + 1 - 2⁶ : 2² + 4 × ( 17 - 15) = - 6
= 1 + 1 - 2⁽⁶⁻²⁾ + 4 x 2 =
= 2 - 2⁴ + 8 =
= 2 - 16 + 8 =
= - 14 + 8 =
= - 6
Daca este (- 2)⁶ : 2² = + 2⁴= + 16