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a=12:[2+72:(12x16-12x10)]=

Răspuns :

a=12:[2+72:(12x6)]
a=12:(2+72:72)
a=12:3
a=4
Sper ca te-am ajutat!!
A=12:[2+72:(12x16-12x10)]=
  =12:[2+72:(192-120)]=
  =12:[2+72:(72)]=
  =12:[2+1]=
  = 12:3 = 4.