Question

aflati doua numere naturale stiind ca suma lor sunt 65 iar diferenta lor 15

Answer 1

$a+b=65 \\ a-b=15 \\ a+b+a-b=65+15 \\ 2a=80=\ \textgreater \ a=80:2=\ \textgreater \ a=40 \\ 40+b=65=\ \textgreater \ b=65-40=\ \textgreater \ b=25$