a fost răspuns

11+2•[3+(4+5•6):2]:5-7

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Răspuns :

11+2×[3+(4+5×6):2]:5-7=

=11+2×[3+(4+30):2]:5-7=

=11+2×(3+34:2):5-7=

=11+2×(3+17):5-7=

=11+2×20:5-7=

=11+40:5-7=

=11+8-7=

=19-7=12

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