Question

giúp...
Giúp với....

Answer 1

y:( \(\dfrac{1}{4}+\dfrac{1}{7}+\dfrac{1}{8}=38\) 
y: \(\dfrac{29}{56}\)= 38
y= 38:\(\dfrac{29}{56}\)
y= \(\dfrac{2128}{29}\)

Answer 2

\(Y:\dfrac{1}{4}+Y:\dfrac{1}{7}+Y:\dfrac{1}{8}=38\\ Y:\left(\dfrac{1}{4}+\dfrac{1}{7}+\dfrac{1}{8}\right)=38\\ Y:\dfrac{29}{56}=38\\ Y=38\times\dfrac{29}{56}\\ Y=\dfrac{551}{28}\\ Vậyx=\dfrac{551}{28}\)