Question

выразите х через у : (2/х-1)-1

Answer 1

$y=(frac{2}{x}-1)-1\ y=frac{2}{x}-1-1\ y=frac{2}{x}-2 | *x\ yx=2-2x\ yx+2x=2\ x(y+2)=2 =>\ x=frac{2}{y+2}$