Bài tập toán 8
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g) \(\frac{x - 1991}{9} + \frac{x - 1993}{7} + \frac{x - 1995}{5} + \frac{x - 1997}{3} + \frac{x - 1999}{1} = \frac{x - 9}{1991} + \frac{x - 7}{1993} + \frac{x - 5}{1995} + \frac{x - 3}{1997} + \frac{x - 1}{1999}\)
h) \(\frac{1909 - x}{91} + \frac{1907 - x}{93} + \frac{1905 - x}{95} + \frac{1903 - x}{91} + 4 = 0\)
i) \(\frac{x - 85}{15} + \frac{x - 74}{13} + \frac{x - 67}{11} + \frac{x - 64}{9} = 10\)
g) \(\frac{x - 1991}{9} + \frac{x - 1993}{7} + \frac{x - 1995}{5} + \frac{x - 1997}{3} + \frac{x - 1999}{1} = \frac{x - 9}{1991} + \frac{x - 7}{1993} + \frac{x - 5}{1995} + \frac{x - 3}{1997} + \frac{x - 1}{1999}\)
h) \(\frac{1909 - x}{91} + \frac{1907 - x}{93} + \frac{1905 - x}{95} + \frac{1903 - x}{91} + 4 = 0\)
i) \(\frac{x - 85}{15} + \frac{x - 74}{13} + \frac{x - 67}{11} + \frac{x - 64}{9} = 10\)