3. tìm x
a. x+ \(\dfrac{1}{3}\)=\(\dfrac{1}{2}\)
b. \(\dfrac{5}{3}\) - x =\(\dfrac{4}{7}\)
c. \(\dfrac{4}{7}\). x -\(\dfrac{2}{3}\)=\(\dfrac{1}{5}\)
d.\(\dfrac{2}{5}\): x =-\(\dfrac{1}{4}\)
Loga
Toán lớp 6
