Thực hiện phép tính
a) 6\(\dfrac{5}{12}\): 2\(\dfrac{3}{4}\)+ 11\(\dfrac{1}{4}\). ( \(\dfrac{1}{3}\)- \(\dfrac{1}{5}\))
b) ( \(\dfrac{3}{5}\)+ 0,415 - \(\dfrac{3}{200}\)) . 2\(\dfrac{2}{3}\). 0,25
c) \(1\dfrac{13}{15}\). 0,75 - ( \(\dfrac{11}{20}\)+ 25% ) : \(\dfrac{7}{3}\)
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