Đáp án:
Giải thích các bước giải:
$\frac{2}{5}x-\frac{1}{10}=2$
=>$ \frac{2}{5}x=\frac{21}{10}$
=> $x=\frac{21}{10}×\frac{5}{2}$
$x= \frac{21}{4}$
$(x-\frac{1}{2})(8x+16)=0$
$X-\frac{1}{2}=0=> x=\frac{1}{2}$
8x+16=0=> x=2
X+5=-x+3=> 2x=-2 => x=-1
$\frac{1}{2}(2x+3)+\frac{1}{3}x=\frac{1}{2}$
$\frac{4}{3}x=-1=> x= \frac{-3}{4}$
$10x+\frac{1}{2}-11=0$
=> $x= \frac{21}{20}$
$(2x+\frac{1}{5})(\frac{1}{x}+\frac{5}{4})=0$
=> $2x+\frac{1}{5}=0=> x=\frac{-1}{10}$
$\frac{1}{x}+\frac{5}{4}=0=> x= \frac{-4}{5}$