Question

Tìm các số ngyên x,y,z biết

-4/8=x/-10=-7/y=z/-24

Answer 1

\(\frac{-4}{8}=\frac{x}{-10}=\frac{-7}{y}=\frac{z}{-24}\)

\(\frac{-4}{8}=\frac{x}{-10}\)=> ( -4 ) . ( -10 ) = 8x => 40 = 8x => x = 5

\(\frac{5}{10}=\frac{-7}{y}\)=> 5y = 10 . ( -7 ) => 5y = -70 => y = -14

\(\frac{-7}{-14}=\frac{z}{-24}\)=> ( -7 ) . ( -24 ) = -14z => 168 = -14z => z = -12

Answer 2

@Quỳnh , dấu sai kìa.

\(\frac{-4}{8}=\frac{x}{-10}=\frac{-7}{y}=\frac{z}{-24}\)

Xét : \(\frac{-4}{8}=\frac{x}{-10}\Leftrightarrow40=8x\Leftrightarrow x=5\)

Xét : \(\frac{-7}{y}=\frac{-4}{8}\Leftrightarrow-56=-4y\Leftrightarrow y=14\)

Xét : \(\frac{-4}{8}=\frac{z}{-24}\Leftrightarrow96=8z\Leftrightarrow z=12\)