Question

a, x =\(\dfrac{-2}{7}\) +\(\dfrac{9}{7}\) 

b,\(\dfrac{x}{3}\) =\(\dfrac{2}{5}\) +\(\dfrac{-4}{3}\) 

Làm giúp mik vs mình đang cần gấp!

 

Answer 1

a) \(x=\dfrac{-2}{7}+\dfrac{9}{7}=1\) 

b) \(\dfrac{x}{3}=\dfrac{2}{5}+\dfrac{-4}{3}\) 

     \(\dfrac{x}{3}=\dfrac{-14}{15}\) 

\(\Rightarrow x=\dfrac{3.-14}{15}=\dfrac{-14}{5}\)

Answer 2

\(x=\dfrac{-2}{7}+\dfrac{9}{7}\) 

\(x=1\)

Answer 3

x=1

Answer 4

A) X = \(\dfrac{-2}{7}\)+ \(\dfrac{9}{7}\)

X = 1