Question

[Nguyễn Ngọc Linh]

(-(3)/(31))+ (-(6)/(17)) +( 1)/(2) + (-(28)/(31)) + (-(11)/(17)) + (-(1)/(6))

Answer 1

[Nguyễn Thị Thương Hoài]

A = - \(\dfrac{3}{31}\)  - \(\dfrac{6}{17}\) + \(\dfrac{1}{2}\) - \(\dfrac{28}{31}\) - \(\dfrac{11}{17}\)- \(\dfrac{1}{6}\)

A = -( \(\dfrac{3}{31}\) + \(\dfrac{28}{31}\)) - ( \(\dfrac{6}{17}\) + \(\dfrac{11}{17}\)) +( \(\dfrac{1}{2}\)- \(\dfrac{1}{6}\))

A = - \(\dfrac{31}{31}\) - \(\dfrac{17}{17}\)+ \(\dfrac{1}{3}\)

A = -1 - 1 + \(\dfrac{1}{3}\)

A = \(-\dfrac{5}{3}\)