cảm ơn trước nhe mn ^-^ (. là nhân nhé)
a)0,2.\(\dfrac{15}{36}\)-(\(\dfrac{2}{5}\)+\(\dfrac{2}{3}\)):1\(\dfrac{1}{5}\)
b)1\(\dfrac{13}{15}\).0,75-(\(\dfrac{8}{15}\)+0,25).\(\dfrac{24}{47}\)
c)5:(4\(\dfrac{3}{4}\)-1\(\dfrac{25}{28}\))-1\(\dfrac{3}{8}\):(\(\dfrac{3}{8}\)+\(\dfrac{9}{20}\))