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[tex](5x - 3y = 7 \\ (2y + 3x = 7 \\ = (5x - 3y = 7 \ \ (x \frac{7}{3} - \frac{2}{3}y \\ \\ 5( \frac{7}{3} - \frac{2}{3} y) - 3y = 7 \\ y= \frac{14}{19} \\ x = \frac{7}{3} - \frac{2}{3} \times \frac{14}{19} \\ x = \frac{35}{19} \\ (x.y) = ( \frac{35}{19} \frac{14}{19} ) \\ \\ (5 \times \frac{35}{19} - 3 \times \frac{14}{19} = 7 \\ (2 \times \frac{14}{19} + 3 \times \frac{35}{19} = 7 \\(7 = 7 \\ = (7 = 7 \\ (x.y) = \frac{35}{19} \frac{14}{19} [/tex]