Question

TÍNH NHANH

4/3+17/3+17/9+19/13+1/9+14/6=

 

Answer 1

A = \(\dfrac{4}{3}\) + \(\dfrac{17}{3}\) +  \(\dfrac{17}{9}\) + \(\dfrac{19}{13}\) + \(\dfrac{1}{9}\) + \(\dfrac{14}{6}\)

A = (\(\dfrac{4}{3}\) + \(\dfrac{17}{3}\)) + (\(\dfrac{17}{9}\) + \(\dfrac{1}{9}\)) + (\(\dfrac{19}{13}\) + \(\dfrac{14}{6}\))

A = \(\dfrac{21}{3}\) + \(\dfrac{18}{9}\) + \(\dfrac{148}{39}\)

A = 7 + 2 + \(\dfrac{148}{39}\)

A = 9 + \(\dfrac{148}{39}\)

A = \(\dfrac{39\times9}{39}\) + \(\dfrac{148}{39}\)

A = \(\dfrac{499}{39}\)

Answer 2

4/3+17/3+17/9+19/13+1/9+14/6=499/39.

Answer 3

Ngu