Question

[Đào Thảo Nguyên]

Hãy tính 4 1/3 + 3 3/4 + 2 - 2/5 + 8 - 3/5 + 7 - 1/4 + 6 - 2/3

Answer 1

[Nguyễn Thị Thương Hoài]

A = 4\(\dfrac{1}{3}\) + 3\(\dfrac{3}{4}\) + 2 - \(\dfrac{2}{5}\) + 8 - \(\dfrac{3}{5}\) + 7 - \(\dfrac{1}{4}\) + 6 - \(\dfrac{2}{3}\)

A = \(\dfrac{13}{3}\) + \(\dfrac{15}{4}\) + ( 2 + 8 + 6 + 7) - ( \(\dfrac{2}{5}\) + \(\dfrac{3}{5}\)) - \(\dfrac{1}{4}\) - \(\dfrac{2}{3}\)

A = \(\dfrac{13}{3}\) + \(\dfrac{15}{4}\) + 23 - 1 - \(\dfrac{1}{4}\) - \(\dfrac{2}{3}\)

A = ( \(\dfrac{13}{3}\) - \(\dfrac{2}{3}\)) + 22 +( \(\dfrac{15}{4}\) - \(\dfrac{1}{4}\) )

A = \(\dfrac{11}{3}\) + 22 + \(\dfrac{14}{4}\)

A =  \(\dfrac{11}{3}\) + 22 + \(\dfrac{7}{2}\)

A =    \(\dfrac{22}{6}\) + \(\dfrac{132}{6}\) + \(\dfrac{21}{6}\)

A = \(\dfrac{175}{6}\)