Question

The average of 8 and x = 3. What is x?

Answer 1

x= -2

Explanation:

The average of 8 and x

(8+x)/2

is 3

(8+x)/2 = 3

Multiply each side by 2

(8+x)/2 *2 = 3*2

8+x = 6

Subtract 8 from each side

8+x-8 = 6-8

x = -2