Tìm x
a) \(\dfrac{-2}{3}\) x (\(\dfrac{1}{3}\)- \(\dfrac{1}{2}\)-\(\dfrac{3}{4}\)) \(\ge\) x \(\ge\) -4\(\dfrac{1}{3}\) x (\(\dfrac{1}{2}\) - \(\dfrac{1}{6}\))
b) 21% +\(\dfrac{3}{4}\) -\(\dfrac{11}{5}\) \(\ge\) 2x -1 \(\ge\) -3\(\dfrac{1}{2}\) + 3\(\dfrac{1}{5}\)
c) 43\(\dfrac{1}{2}\) - 39\(\dfrac{1}{5}\) \(\le\) -3x +4 \(\le\) 9\(\dfrac{1}{5}\) + 50 \(\dfrac{1}{7}\)
GIÚP MK NHA ĐANG CẦN GẤP HẠN CHÓT CHIỀU MAI NỘP