Question

tìm 6 số hửu tỉ x sao cho -1/7<x<-1/8

Answer 1

-\(\frac{-1}{7}< x< \frac{-1}{8}\)  =>  \(\frac{-1\cdot56}{7\cdot56}< x< \frac{-1\cdot49}{8\cdot49}\)=>  \(\frac{-56}{392}< x< \frac{-49}{392}\)

=> 6 số đó là: \(\frac{-55}{392};\frac{-54}{392};\frac{-53}{392};\frac{-52}{392};\frac{-51}{392};\frac{-50}{392}\)