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14 × { 45 + 5[ 24 - ( 8× 9 - 61 + 12 ) ] } - 120;

Răspuns :

14*{45+5*[24-(8*9-61+12)]}-120=
=14*{45+5*[24-(72-61+12)]}-120=
=14*{45+5*[24-(11+12)]}-120=
=14*[45+5*(24-23)]-120=
=14*(45+5*1)-120=
=14*(45+5)-120=
=14*50-120=
=700-120=580
  14*{ 45 + 5*[ 24 - ( 8* 9 - 61 + 12 ) ] } - 120=
=14*{45+5*[24-(72-61+12)]}-120
=14*[45+5*(24-23)] -120
=14*(45+5*1)-120
=14*50-120
=700-120
=580