Question

Imi puteti rezolva problema aceasta?



Stiind ca s-r=82 si r:s=5 septimi, determina termenii necunoscuti.

Answer 1

s-r=82 => 7r/5-r=82 => 7r-5r=410 => 2r=410 => r=205
r/s=5/7 => 7r=5s => s=7r/5 = 287