Question

Tìm x biết:

\(\dfrac{X}{3}=\dfrac{X+2}{5}\)

Answer 1

\(\dfrac{x}{3}=\dfrac{x+2}{5}\)

\(\Rightarrow5x=3x+6\)

\(\Rightarrow2x=6\)

\(\Rightarrow x=3\)

Answer 2

Ta có:

\(\dfrac{x}{3}\) = \(\dfrac{x+2}{5}\)

⇒ 5x = 3.( x + 2)

⇒5x = 3x + 6

⇒ 2x = 6

⇒ x = 6:2

⇒x = 3

Vậy .....