please I really don't know how to answer this question, it's an example of question I'll have in my math exam. Even a little help would make me happy! I really want to understand please. It's written in French but the translation is : Step (1) in the calculation of the determinant below is to replace the 3rd line with 2 times the 3rd line minus 3 times the 1st line ( L3?2L3-3L1 ). Guess the operations performed next and correct the factor in front of this determinant at each step. Do not use any spaces in your answer. If the coefficient is 1, write 1 (otherwise your answer will be considered a failure to answer.) If the coefficient is a fraction, for example, x divided by y, write x/y without spaces or parentheses.

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