average of three number is 12 if two number are 8 and 15 then the third number is ?

Answer 1

(8+15+x)/3 = 12

now just find x

Answer 2

13

Answer 3

It's 13 because first do twelve times three which is thirty six.
eighteen plus five is twenty three.
thirty six takeaway twenty three equals thirteen
which is tour answer hope that his helped
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