S
soibac0102


5x+3y+5xy=56xy
tim x,y
b-(b-(b-(
b-(b-(b-(
b-(b-(
b-(b-(b-(@};-
@};-@};-@};-
=((=((=((
|-)|-)
hjjjjjjjjjjjjjjjjjjjjjjjjj
tim x,y
b-(b-(b-(
b-(b-(b-(
b-(b-(
b-(b-(b-(@};-
@};-@};-@};-
=((=((=((
|-)|-)
hjjjjjjjjjjjjjjjjjjjjjjjjj