The mean of 6,8,x+2,10,2x-1 and 2 is 9 find the value of x

1 answer

To find the value of x, first we need to find the sum of all the numbers given:

6 + 8 + x + 2 + 10 + 2x - 1 + 2 = 9

Combine like terms:

16 + 3x + 11 = 9

Combine like terms again:

3x + 27 = 9

Subtract 27 from both sides:

3x = -18

Divide by 3 on both sides to isolate x:

x = -6

Therefore, the value of x is -6.