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I posted this question. Please help me! / Why does this solution say the lower right element is 0? https://www.reddit.com/r/askmath/comments/bb6b2h/why_does_this_solution_say_the_lower_right/
I posted this question. Please help me! / Why does this solution say the lower right element is 0? https://www.reddit.com/r/askmath/comments/bb6b2h/why_does_this_solution_say_the_lower_right/