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100-36:4+(56-3ori9+42:7-3)=

Răspuns :

100-36:4+(56-3×9+42:7-3)=
100-36:4+(56-27+42:7-3)=
100-36:4+(56-27+6-3)=
100-36:4+(29+3)=
100-36:4+32=
100-9+32=
91+32=
123