Question

suma a doua numere este 105 ,iar 2 pe 3 din cimul numar este egala cu jumatatea numarului 2.Care sint numerele

Answer 1

[tex] \frac{2}{3} *x= \frac{y}{2} =\ \textgreater \ 4x=3y=\ \textgreater \ x= \frac{3y}{4}\\\\ x+y=105 \\ Inlocuim:\\ \\ \frac{3y}{4}+y=105 \\\\ 3y+4y=420\\\\ 7y=420\\\\ y= \frac{420}{7}\\\\ \bold{y=60} \\\\ x= \frac{3y}{4} \\\\ =\ \textgreater \ x= \frac{3*60}{4}\\\\ =\ \textgreater \ x= \frac{180}{4}\\\\ =\ \textgreater \ \bold{x=45} [/tex]