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380-[(270+60):11+X]=300



Răspuns :

380-[(270+60):11+X]=
300(270+60):11+X=80
330:11+x=80
30+x=80
x=50
380-[330:11+x]=300
380-[30+x]=300/+380
30+x=680
x=680-30
x=650

Sper ca te-am ajutat!!!  :)