Question

Bài 1: Thực hiện phép tính
C= \(\dfrac{5}{16}\) - \(\dfrac{7}{13}\)- \(\dfrac{3}{16}\)+ \(\dfrac{-6}{13}\)

D= \(\dfrac{5}{11}\). \(\dfrac{5}{7}\)+\(\dfrac{5}{11}\). \(\dfrac{2}{7}\)+\(\dfrac{6}{11}\)

E= \(\dfrac{3}{13}\). \(\dfrac{6}{11}\)+ \(\dfrac{3}{13}\). \(\dfrac{9}{11}\)- \(\dfrac{3}{13}\). \(\dfrac{4}{11}\)

G= \(\dfrac{-3}{31}\) + \(\dfrac{-6}{17}\)+ \(\dfrac{1}{25}\)+\(\dfrac{-28}{31}\)+ \(\dfrac{-11}{17}\)+ \(\dfrac{-1}{5}\)

H= \(2^2_9\): \(1^1_9\)- \(\dfrac{46}{5}\): \(4^3_5\)

M= \(\dfrac{6}{7}\)+ \(\dfrac{5}{8}\): 5- \(\dfrac{3}{16}\). (-2)\(^2\)

 

Answer 1

a: \(C=\dfrac{1}{2}-1=-\dfrac{1}{2}\)

d: \(=\dfrac{5}{11}\left(\dfrac{5}{7}+\dfrac{2}{7}\right)+\dfrac{6}{11}=\dfrac{5}{11}+\dfrac{6}{11}=1\)

c: \(=\dfrac{3}{13}\left(\dfrac{6}{11}+\dfrac{9}{11}-\dfrac{4}{11}\right)=\dfrac{3}{13}\)