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[29+3x9-13:13-50:(7+3)]:(9-6:3+43)=

Răspuns :

[29+3×9-13:13-50:(7+3)]:(9-6:3+43)=
(29+27-1-50:10):(9-2+43)=
(29+27-1-5):(7+43)=
(56-1-5):50
50:50=
1