h)-5/7 x 2/11 + -5/7 x 9/11 + 5/7

2 bình luận về “h)-5/7 x 2/11 + -5/7 x 9/11 + 5/7”

1. h, (-5)/7 . 2/(11) + (-5)/7 . 9/(11) + 5/7

   = 5/7 . (-2)/(11) + 5/7. (-9)/(11) + 5/7

   = 5/7 ((-2)/(11) + (-9)/(11) + 1)

   = 5/7 . 0

   = 0

   Trả lời
2. h)$\dfrac{-5}{7}$.$\dfrac{2}{11}$$+$$\dfrac{-5}{7}$.$\dfrac{9}{11}$$+$$\dfrac{5}{7}$

   = $\dfrac{-5}{7}$.$(\dfrac{2}{11}$$+$$\dfrac{9}{11})$$+$$\dfrac{5}{7}$

   = $\dfrac{-5}{7}$$+$$\dfrac{5}{7}$

   = $0$

   @giacmocuatoi

   Trả lời