Question

if te arithmetic mean of 8,4,x,6,-3,-5 is 5 find the valur of x

Answer 1

$8 + 4 + x + 6 - 3 - 5 = 5 \\ 12 + x + 6 - 8 = 5 \\ 12 + x - 2 = 5 \\ 10 + x = 5 \\ x = 5 \div 10 \\ x = 1 \div 2$