Question

18/5+1< x < 1 + 30 /7. tìm  x

Answer 1

18/5 + 1 = 18/5 + 5/5 = 23/5 = 161/7

1 + 30/7 = 7/7 + 30/7 = 37/7 = 185/7

vậy ta có:  \(\frac{161}{7}\)< x < \(\frac{185}{7}\) 

x = \(\frac{162}{7};\frac{163}{7};....;\frac{184}{7}\)

Answer 2

18/5 + 1 = 18/5 + 5/5 = 23/5 = 161/7

1 + 30/7 = 7/7 + 30/7 = 37/7 = 185/7

vậy ta có:  $\frac{161}{7}$1617 < x < $\frac{185}{7}$1857  

x = $\frac{162}{7};\frac{163}{7};....;\frac{184}{7}$1627 ;1637 ;....;1847