👤

aflati numerele x si y stiinda ca x-y=28 x= 4xy+4

Răspuns :

x-y=28
x=4y+4
inlocuim ce stim in prima relatie
4y+4-y=28
3y+4=28
3y=28-4
3y=24,y=24:4,y=8
x-y=28
x-8=28
x=28+8,x=36