Question

giúp mình với mình sẽ tick

 

Answer 1

a. \(\dfrac{5}{x}=\dfrac{-3}{9}\)

\(\Rightarrow x.\left(-3\right)=5.9\)

\(x.\left(-3\right)=45\Rightarrow x=-15\)

 

b. \(\dfrac{x}{-8}=\dfrac{3}{-6}\)

\(\Rightarrow x.\left(-6\right)=\left(-8\right).3\)

\(x.\left(-6\right)=-24\Rightarrow x=4\)

 

c. \(\dfrac{x}{-7}=\dfrac{-4}{-14}\)

\(\Rightarrow x.\left(-14\right)=\left(-7\right).\left(-4\right)\)

\(x.\left(-14\right)=28\Rightarrow x=-2\)