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Rezultatul calculului –5 – {−5 – [−5 − (−5 + 10 − 8) − (−7+ 5)] − (+12 − 3)} este egal cu:​

Răspuns :

–5 – {−5 – [−5 − (−5 + 10 − 8) − (−7+ 5)] − (+12 − 3)}=

=–5 – {−5 – [−5 − (5 − 8) − (−2)] − (+9)}

=–5 – {−5 – [−5 − (-3) +2] − 9}

=–5 – [−5 – (−5 +3 +2) − 9]

=–5 – [−5 – (−2 +2) − 9]

=–5 – (-5 – 0 − 9)

=–5 – (-5 − 9)

=–5 – (-14)

=-5+14

=9