Question

Find the value of x in the mean following is 71,x,x+3,18,35,,17

Answer 1

Step-by-step explanation:

$mean = \frac{71 + x + x + 3 + 18 + 35 + 17}{6} \\ \: \: \: \: \: \: \: \: \: \: 6= 144 + 2x \\ 6 - 144 = 2x \\ \: \: \: \: \: \: \: \: \: \: x = \frac{ - 138}{2} \\ \: \: \: \: \: \: \: \: \: \: x = - 69$