Question

Answer 1

\(\Rightarrow-63.x=5.126\)

\(\Rightarrow-63.x=630\)

\(\Rightarrow x=630:\left(-63\right)\)

\(\Rightarrow x=-10\)

Answer 2

`x/126 = 5/(-63)`

`=> x = (-5)/63 xx 126 `

`=> x = -10`

 

Answer 3

Ta có : \(\dfrac{x}{126}\text{=}\dfrac{5}{-63}\)

\(\Rightarrow\dfrac{x}{126}\text{=}\dfrac{-5\times2}{63\times2}\text{=}\dfrac{-10}{126}\)

\(\Rightarrow x\text{=}-10\)