[(y+150:5)x3+200]:400=2
(y+30)x3+200=2x400
(y+30)x3+200=800
(y+30)x3=800-200
y+30x3=600
y+30=600:3
y+30=200
y=200-30
y=170
Răspuns:
Poftim , sper ca te-am ajutat
