1) 2x+27=-11
2x=(-11)-27=-38
x=(-38):2=-19
=>x=-19
2)x:$\frac{-3}{5}$ =$\frac{-10}{21}$
x=$\frac{-3}{5}$.$\frac{-10}{21}$
=>x=$\frac{2}{7}$
3)$\frac{x}{3}$ -$\frac{1}{4}$ =$\frac{-5}{4}$
$\frac{x}{3}$ =$\frac{-5}{4}$ +$\frac{1}{4}$
=>$\frac{x}{3}$=-1=$\frac{-3}{3}$
=>x=-3