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Rezolva exercitiul:
2+2x3x{[(7x3-5)+2x6]:4+5}-[(10+100)x5-60]=


Răspuns :

2+2x3x{[(21-5)+2x6]:4+5}-[110x5-60]=
2+2x3x[(16+12):4+5]-(550-60)=
2+2x3x(28:4+5)-490=
2+2x3x(7+5)-490=
2+2x3x12-490=
74-490=-416