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= $frac{7}{11}$