Question

Detemina nr. naturale x,y astfel incat: (x-3) inmultit cu (y+2) = 12

Answer 1

(x-3)·(y+2)=12
x'-3=12⇔x'=15
y'+2=12⇔y'=10
x=15-10
x=5 deci (5-3)·(y+2)=12
              2(y+2)=12
              2y+4=12/-4 ⇔2y=8/:2 ⇔y=4 si am aflat numerele: x=5 iar y=4