Question

please help me to solve this question...​

Answer 1

Answer:

0

Step-by-step explanation:

7mumbers+0= 7 numbers

nothing changes

Answer 2

Answer

• The number added to the set is 8

Explanation

let the sum of 7 numbers be x

x/7 = 9..........(1)

Then the number added is y

x + y / 8 = 9..........(2)

from (1)

the value of x is 63

63 + y / 8 = 9

63 + y = 72

y = 72-63

y = 9

Hope you can understand