Question

Determinati x stiind ca 0,125 = 0,025 . (ori) (x+4)

Answer 1

$\frac{125}{1000} = \frac{25}{1000} *(x+4) \\ x+4= \frac{125}{1000}: \frac{25}{1000} \\ x+4= \frac{125}{1000}* \frac{1000}{25} \\ =\ \textgreater \ x+4=5 \\ =\ \textgreater \ x=1$

Answer 2

0,125=0,025×(x+4)<=>(inmultim relatia cu 1000)125=25×(x+4)<=>125=25x+100<=> 125-100=25x<=>25=25x=>x=1.