4,5:x+3/4 равно 2 19/28

$4.5:x+ \frac{3}{4} = \frac{219}{28}$
$\frac{4.5}{x} + \frac{3}{4} = \frac{219}{28}$
$\frac{45}{10x}+ \frac{3}{4} = \frac{219}{28}$
$\frac{9}{2x} + \frac{3}{4} = \frac{219}{28}$
$\frac{9}{2x} + \frac{3}{4} = \frac{219}{28} , x \neq 0$
$\frac{9}{2x} = \frac{219}{28} - \frac{3}{4}$
$\frac{9}{2x} = \frac{219-21}{28}$
$\frac{9}{2x} = \frac{198}{28}$
$\frac{9}{2x} = \frac{99}{14}$
$126=198x$
$198x=126$
$x= \frac{126}{198}$
$x= \frac{7}{11} , x \neq 0$
Ответ: х= $\frac{7}{11}$