Question

a.\(\frac{34}{13}-\frac{19}{28}-\frac{3}{31}\)

b.\(\frac{7}{3}-\frac{11}{5}-\frac{4}{5}\)

c.\(\frac{18}{13}+\frac{55}{46}-\frac{5}{13}\)

Bài Tính Nhanh

Answer 1

a, \(\frac{34}{13}-\frac{19}{28}-\frac{3}{31}=>\left(\frac{34}{13}-\frac{3}{31}\right)-\frac{19}{28}\)

= \(1-\frac{19}{28}=\frac{9}{28}\)

b, \(b,\frac{7}{3}-\left(\frac{11}{5}+\frac{4}{5}\right)\)

= \(\frac{7}{3}-3=>\frac{7}{3}-\frac{9}{3}=\frac{-2}{3}\)

c, \(\frac{18}{13}+\frac{55}{46}-\frac{5}{13}=\left(\frac{18}{13}-\frac{5}{13}\right)+\frac{55}{46}\)

= \(1+\frac{55}{46}=\frac{46}{46}+\frac{55}{46}=\frac{101}{46}\)

Answer 2

đúng nha 100%