Đề bạn viết ko rõ.
$\frac{150}{x}+10+3.\frac{1}{4}+\frac{150}{x}=10$
`=>`$\frac{150}{x}+\frac{13}{4}+\frac{150}{x}=0$
`=>`$\frac{300}{x}+\frac{13}{4}=0$
`=>`$\frac{300}{x}=\frac{-13}{4}$
`=>`$300.4=x.(-13)$
`=>`$1200=x.(-13)$
`=>`$x=\frac{-1200}{13}$
Vậy: $x=\frac{-1200}{13}$