Question

\(\dfrac{x}{3}+\dfrac{2x}{5}=10\)

Answer 1

pttđ : 

\(\dfrac{5x}{15}+\dfrac{6x}{15}=\dfrac{150}{15}\)

=> \(5x+6x=150\)

=> \(11x=150\)

=> \(x=\dfrac{150}{11}\)

Answer 2

\(\dfrac{x}{3}+\dfrac{2x}{5}=10\)

\(\Leftrightarrow\cdot\dfrac{5x+6x}{15}=\dfrac{150}{15}\)

`=> 5x+6x=150`

`=> 11x=150`

`=>x=150/11`