Question

Tính :

-66 . \((\dfrac{1}{2} - \dfrac{1}{3}+\dfrac{1}{11})\) + 124 . ( -37 ) + 63 . ( -124 )

Answer 1

\(-66.\left(\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{11}\right)+124.\left(-37\right)+63.\left(-124\right)\)

\(=-66.\dfrac{17}{66}+124.\left(-37-63\right)\)

\(=-17+124.\left(-100\right)=-17-12400\)

\(=-12417\)

Answer 2

Tính :

-66 . ( \(\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{11})\)+ 124 . (-37) + 63 . (-124)

= -66 . (\(\dfrac{33}{66}-\dfrac{22}{66}+\dfrac{6}{66}\))+ (-4588) + (-7812)

= -66 . \(\dfrac{17}{66}\)+ (-12400)

= -17 + (-12400)

= -12417