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8+3×[(3×13-4×12:6+2×11+2):5]

Răspuns :

=8+3*[(39-4*2+22+2):5]
=8+3*[(39-8+24):5]
=8+3*(55:5)
=8+3*11
=8+33
=41
8+3x[(3x13-4x12:6+2x11+2):5]=
8+3x(39-48:6+22+2):5=
8+3x(39-8+22+2):5=
11x(31+22+2):5=
11x55:5=
11x11=121