Mathematics, 21.04.2020 20:17, Suzispangler2264

Prove that the graphs of the equations 3x–y=–5 and –x+10y=21 and 11x+21y=31 intersect at the point P (–1, 2).

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Prove that the graphs of the equations 3x–y=–5 and –x+10y=21 and 11x+21y=31 intersect at the point P...