Given the variable x as your input, multiply it by three and put the result in y.
Duplicate of Problem 2980.
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
Getting the absolute index from a matrix
03 - Matrix Variables 6
Find Out sum of principal diagonal element of given matrix
Skip by a multiple
Divide by 4
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