Răspuns :
2 × 2 : 2 + 2 - 2 + ( 2 - 2 + 2 × 2 : 2 ) =
= 4 : 2 + 2 - 2 + ( 2 - 2 + 4 : 2 ) =
= 2 + 2 - 2 + ( 0 + 2 ) =
= 4 - 2 + 2 =
= 2 + 2 =
= 4
= 4 : 2 + 2 - 2 + ( 2 - 2 + 4 : 2 ) =
= 2 + 2 - 2 + ( 0 + 2 ) =
= 4 - 2 + 2 =
= 2 + 2 =
= 4