Question

|4/x|=8/9 помогите!!!

Answer 1

$it left|dfrac{4}{x}right| = dfrac{8}{9} Leftrightarrow dfrac{4}{x} = pmdfrac{8}{9} \;\ \;\ dfrac{4}{x} = -dfrac{8}{9} Leftrightarrowdfrac{4}{x} =dfrac{-8}{9} Leftrightarrow 4cdot9= -8x|_{:(-4)} Leftrightarrow -9 = 2x |_{:2} Leftrightarrow x = -4,5 \;\ \;\ dfrac{4}{x} = dfrac{8}{9} Leftrightarrow 4cdot9= 8x|_{:4} Leftrightarrow 9 = 2x |_{:2} Leftrightarrow x = 4,5$