Question

Tìm x; y biết 4/x=-y/6=0.5

Answer 1

\(\frac{4}{x}=\frac{-y}{6}=0,5\)

\(\Rightarrow\frac{4}{x}=\frac{-y}{6}=\frac{1}{2}\)

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

Ta có  x.1=4.2=8

         => x = 8

=>\(\frac{-y}{6}=\frac{1}{2}\)

Ta lại có -y.2= 6.1=6

              -y = 6 ; 2 = 3

           => y = -3

Vậy x = 8 ; y = -3

Answer 2

-y*10=6*5=> -y=30/10=-3

4/x=-3/6=-1/2

x*(-1)=4*2

x=8/(-1)=-8