X^2-4/3 - 6-x/2 = 3 / - Это дробь

$\frac{ x^{2} -4}{3}- \frac{6-x}{2}=3$
$\frac{2 x^{2} -8-18+3x}{6}=3$
$2 x^{2} +3x-26=18$
$2 x^{2} +3x-26-18=0$
$2 x^{2} +3x-44=0$
$D=b ^{2}-4ac$
$D=3 ^{2}-4*2*(-44)=9+352=361$
$x_{1}= \frac{-b+ \sqrt{D} }{2a}$
$x_{1}= \frac{-3+ \sqrt{361} }{2*2}= \frac{-3+19}{4}= \frac{16}{4}=4$
$x_{2}= \frac{-b- \sqrt{D} }{2a}$
$x_{2}= \frac{-3-19}{4}= \frac{-22}{4}=- \frac{11}{2}=-5 \frac{1}{2}=-5.5$
Ответ: $x_{1}=4$ , $x_{2}=-5.5$