Alas, the grid deduction fortnightly is over, but my love for the genre remains the same - i.e. very high.
So, here is another grid deduction puzzle. An algebra sudoku!
I think the rules are fairly obvious. Just note that the numbers in each box should be read normally, going left to right or going top to bottom. Additionally, if the numbers in a box are say, '3' and '4', they can only be read as '34' - they can't be read as '3.4', '3/4', '3*4', or anything like that.
The theme of this puzzle is dozens - 12s and 13s are everywhere!
The maths in this one is very simple. But who knows how far algebra sudokus could go... who's up for a polynomial themed algebra sudoku?!? :D