Question

determ.nr. nat x: 3x+1/2x+5 din252 este20

Answer 1

$( \frac{3x+1}{2x+5} )*252=20$

$\frac{252(3x+1)}{2x+5} =20;252(3x+1)=20(2x+5);756x+252=40x+100;$

$716x=-152;x=(- \frac{152}{716} );x= \frac{38}{179}$