bài 1 mọi người làm ơn giúp mình
a,\(\left(\frac{-2}{5}+\frac{1}{3}\right).\frac{30}{7}-\left(\frac{-1}{2}\right)^2\)
b,\(\left(\frac{-1}{2}-\frac{2}{3}\right)^2.\frac{72}{5}+\left(\frac{-4}{5}\right)^2.\frac{25}{16}\)
c,\(\left(1\frac{2}{3}+50\%\right):\frac{3}{12}-\left(\frac{-3}{7}\right)^2:\frac{-3}{7}\)
d,\(\left|\frac{-1}{2}\right|.\frac{4}{3}-1,2:\left(\frac{-6}{5}\right)^2\)
