Question

if x+y+z =a y+z=b and x+z=c then the average of x,y and z.

Answer 1

X+y+z/3=?
a/3 answer....

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Answer 2

$x + y + z = a \\ y + z = c \\ x + z = c \\ \: average \: of \: x \: y \: and \: z \: is \: given \: by \\ \frac{x + y + z}{3} = \frac{a}{3}$
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