average of 16 and x is three. find x

[math_celebrity]

average of 16 and x is three. find x

Average of 16 and x is written as:
(16 + x)/2

We set this equal to 3:
(16 + x)/2 = 3

Cross multiply;
x + 16 = 6

Type this equation into our search engine and we get:
x = -10