1: ĐKXĐ: x \(\ne\) 0; 1
\(\frac{1}{x}+\frac{1}{x-1}=\frac{3}{2}\)
\(\Leftrightarrow\frac{2x-1}{x\left(x-1\right)}=\frac{3}{2}\)
\(\Leftrightarrow3x^2-3x=4x-2\)
\(\Leftrightarrow3x^2-7x=-2\)
\(\Leftrightarrow9x^2-21x+12,25=6,25\)
\(\Leftrightarrow\left(3x-3,5\right)^2=6,25\)
\(\Leftrightarrow...\left(tl\right)\)