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25-[300:10+2(725:5-29x5)-4x5] ajutatima va rog

Răspuns :

25-[300:10+2×(725:5-29×5)-4×5]=
25-[300:10+2×(145-145)-4×5]=
25-(300:10+2×0-4×5)=
25-(30+0-4×5)=
25-(30-20)=
25-10=
15