Question

Giúp mềnh nha

x-1/2=x/4

x+1/x-1=1/2

Ai nhanh thì mik tik nha

 

Answer 1

            \(\frac{x-1}{2}=\frac{x}{4}\)

\(\Leftrightarrow\)\(\frac{2\left(x-1\right)}{4}=\frac{x}{4}\)

\(\Leftrightarrow\)\(2\left(x-1\right)=x\)

\(\Leftrightarrow\)\(2x-2=x\)

\(\Leftrightarrow\)\(2x-x=2\)

\(\Leftrightarrow\)\(x=2\)

Vậy....

             \(\frac{x+1}{x-1}=\frac{1}{2}\)

\(\Leftrightarrow\)\(2\left(x+1\right)=x-1\)

\(\Leftrightarrow\)\(2x+2=x-1\)

\(\Leftrightarrow\)\(2x-x=-1-2\)

\(\Leftrightarrow\)\(x=-3\)

Vậy....