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2014-01-24T18:31:47+02:00
3=6-a : 9 
a :9= 6-3
a : 9 =3
a=9 * 3
a = 27 
 Verificare : 
(13-3*4)*18:6=6-27:9
(13-12) * 3 = 6-3
3=3 (A)

  • Utilizator Brainly
2014-01-24T18:33:32+02:00