Lö if \begincases 2x + y = 7 }, {x - 3y = -2 \endcases via Cramer. (Antw.: x = 19/7, y = 11/7 .)Lö if \begincases 2x + y = 7 }, {x - 3y = -2 \endcases via Cramer. (Antw.: x = 19/7, y = 11/7 .)

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