Question 1142420
 Find the value of x if the arithmetic mean of 3 and 3x+5 is 8.
:
{{{(3+(3x+5))/2}}} = 8
3 + 3x + 5 = 16
3x + 8 = 16
3x = 16 - 8
3x = 8
x = {{{8/3}}}