Se sa: 69426-435:[363:3-(b×2+6×4)]+12345:5=71890 afla-l pe b

Răspuns :

Răspuns:

68991/(121-2b+24+2469=71890 => 68991/(2614-2b)=71890 => (2614-2b)(71890)=68991

=>187929460-143780b=68991 =>

=>-143780b=68991-187929469=>

=> b=14450113/1106 ~ 1306.52.