105 - x +1 = 99

         x +1 = 105 - 99

          x + 1 = 6

             x    =6 -1

            x =5

1675 : 25 = 67 

đáp số : 67

đáp án bằng 160 nhé

24 đó bạn

k nha

Trong dãy số tự nhiên không có số tự nhiên nào lớn nhất vì dãy số tự nhiên kéo dài đến vô tận . Vì thế , phép tính này không có kết quả ! 

Chúc bn hk zỏi !

9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
[đây nè] 8 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
TÌM ĐƯỢC RỒI ĐÓ 
K ĐI

kết quả là 38416

     k mik nha

Chung minh rang :

2⁹ + 2¹⁰ + 2¹¹ chia het cho 7

= 2⁹ (1+2+4)

= 2⁹ .  7 : 7 = 2⁹

=) 2⁹ + 2¹⁰ + 2¹¹ chia het cho 7

thank you!!!!!!!!