Răspunsuri

  • Utilizator Brainly
2014-11-11T18:55:05+02:00
__  __
xy+yx=77
_________
x=?y=?
_________
__  __
xy+yx=77
10x+y+10y+x=77
11x+11y=77|:11
x+y=7
x∈{1,2...7}
y∈{1,2...7}
2 4 2