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b) Calculati: 132:{[3x(2x13-20)+9]=:9+15+(5+2x5)}​

Răspuns :

Răspuns:

132:{[3×(2×13-20)+9]:9+15+(5+2×5)}

=132:[(3×6+9):9+15+15]

=132:(27:9+15+15)

=132:(3+15+15)

=132:33

=4