Question

mn giúp em với,cảm ơn mn ạ

Answer 1

      \(\dfrac{-13}{8}+\dfrac{-5}{9}+\dfrac{26}{26}-\dfrac{13}{9}\)

= \(\left(\dfrac{-13}{8}+\dfrac{26}{16}\right)+\left(\dfrac{-5}{9}-\dfrac{13}{9}\right)\)

= \(\left(\dfrac{-26}{16}+\dfrac{26}{26}\right)+\left(\dfrac{-18}{9}\right)\)

= \(0+\left(-2\right)\)

=  \(-2\)

Answer 2

\(\left(\dfrac{-13}{8}-\dfrac{26}{16}\right)+\left(\dfrac{-5}{9}-\dfrac{13}{9}\right)=\left(\dfrac{-13}{8}-\dfrac{13}{8}\right)+\dfrac{-18}{9}=0+\left(-2\right)=-2\)

Answer 3

-13/8 - 5/9 + 26/16 - 13/9

= (26/16 - 13/8) - (5/9 + 13/9)

= (26/16 + 26/16) - 2

= 13/4 - 2 = 5/4

Answer 4

b) -13/8 + -5/9 + 26/16 - 13/9

= -26/16 + -5/9 + 26/16 - 13/9

= ( -26/16 + 26/16 ) + ( -5/9 + 13/9 )

=            0                +          8/9

=                               8/9

Kết quả đây bn nha! HT!~

Answer 5

\(\dfrac{-13}{8}+\dfrac{-5}{9}+\dfrac{26}{16}-\dfrac{13}{9}\)

\(=\left(-\dfrac{5}{9}-\dfrac{13}{9}\right)+\left(\dfrac{-13}{8}+\dfrac{13}{8}\right)\)

=-2