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What is the value of y in the arithmetic sequence y + 6, 12, 3y?

 Apr 6, 2022
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Since the series is arithmetic  (difference between terms is  constant ), we can  solve this :

 

12 - ( y + 6)  =   3y  -12        simplify

 

6 - y  =  3y -12

 

6 + 12  =  4y

 

18  = 4y

 

y = 18/4   =  9/2

 

 

cool cool cool

 Apr 6, 2022
edited by CPhill  Apr 6, 2022

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