Question

[Nguyễn Hải Đăng]

Tìm x:

a) -2x + \(\dfrac{5}{7}\) = - \(\dfrac{5}{15}\) - \(\dfrac{3}{24}\)

b) 9 - 5x = - \(\dfrac{6}{18}\) + \(\dfrac{2}{7}\)

Answer 1

[Nguyễn Lê Phước Thịnh]

a: \(\Leftrightarrow-2x=-\dfrac{1}{3}-\dfrac{1}{8}-\dfrac{5}{7}=-\dfrac{197}{168}\)

hay x=197/336

c: \(\Leftrightarrow5x=9+\dfrac{6}{18}-\dfrac{2}{7}=\dfrac{190}{21}\)

hay x=38/21