Question

daca dintr-un nr scad 3/5 din el si-i adun 14 obtin 50 care este numarul?

Answer 1

$x- \frac{3}{5} x+14=50$
$x(1- \frac{3}{5} )=36$
$x \frac{2}{5} =36$
$x=36* \frac{5}{2} = \frac{180}{2} =90$