20/x=1/y=z/36=-5/45

Question

tìm x,y,z biết :

20/x=1/y=z/36=-5/45

Answer 1

Ta có  \(\frac{z}{36}=\frac{-5}{45} \Leftrightarrow 45z = -180 \Leftrightarrow z = -4\)

\(\frac{1}{y}=\frac{-4}{36}\Leftrightarrow y=\frac{36.1}{-4}=-9\)

\(\frac{20}{x}=\frac{1}{-9}\Leftrightarrow x =20.(-9)=-180\)

Vậy x = -180; y = -9; z = -4