Question

calculeaza : 5-1/2×(3x-1/2×(7x-2)=0

Answer 1

[tex]5- \frac{1}{2} *(3x- \frac{1}{2} *(7x-2)=0 [/tex]
$5-\frac{1}{2}*(3x-3.5x+1)=0$
$5-\frac{1}{2}*(-0.5x+1)=0$
$5+0.25x-\frac{1}{2}=0$
$\frac{9}{2}+0.25x=0$
$0.25x=-\frac{9}{2}$
$x=-\frac{9}{2} / 0.25$
$x=- \frac{18}{2}$
$x=-9$