125+[14×(40+a:40)-34]×17=47147
125+(14×b-34)×17 =47147
125+c×17=47147
c×17=47147-125
c×17=47022 c=47022:17 c=2766
Inlocuim in paranteza cu b
14×b-34=2766 14×b=2766+34 14×b=2800 b=2800:14 b =200
Inlocuim in paranteza cu a
40+a:40=200 a:40=200-40 a:40=160 a=160×40 a=6400
Acum inlocuim in ex de baza
X+240=6400 x=6400-240 x=6160.Sper ca e bine
