Question

x/30+1+x/24=11/2

Answer 1

  

Answer 2

\(\dfrac{x}{30}+1+\dfrac{x}{24}=\dfrac{11}{2}\)

=> \(\dfrac{4x}{120}+\dfrac{5x}{120}+\dfrac{120}{120}=\dfrac{11}{2}\)

=> \(\dfrac{9x+120}{120}=\dfrac{11}{2}\)

=> 18x + 240 = 1320

=> 18x = 1080

=> x = 60

   Vậy x=60

Answer 3

\(\dfrac{x}{30}+1+\dfrac{x}{24}=\dfrac{11}{2}\\ \Leftrightarrow\dfrac{x}{30}+\dfrac{x}{24}=\dfrac{11}{2}-1=\dfrac{11}{2}-\dfrac{2}{2}=\dfrac{9}{2}\\ \Leftrightarrow\dfrac{4x}{120}+\dfrac{5x}{120}=\dfrac{540}{120}\\ \Leftrightarrow4x+5x=540\\ \Leftrightarrow x=\dfrac{540}{9}=60\)