Răspunsuri

  • Utilizator Brainly
2014-09-22T18:10:23+03:00
[(x+3)•3+3]•3+3=102
[(x+3)•3+3]•3=99
[(x+3)•3+3]=33
(x+3)•3=30
x+3=30:3
x+3=10
x=7