Răspunsuri

  • Utilizator Brainly
2014-09-16T16:28:29+03:00
[(X+3)x3+3]x3+3=102
[3x+9+3]x3+3=102
[3x+12]x3+3=102
9x+36+3=102
9x+39=102
9x=102-39
9x=63
x=63:9
x=7