Tìm x
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4) Tính x:
\(\frac{3}{5} + \frac{2}{5} \cdot \left( \frac{2}{3} - x \right) = \frac{1}{2};\)
b) \(\frac{1}{4} + \frac{2}{6} \cdot \frac{3}{8} \ldots \frac{14}{30} \cdot \frac{15}{32} = 1 - \frac{1}{2} \cdot x.\)
c) \(|x + \frac{1}{101}| + |x + \frac{2}{101}| + \ldots + |x + \frac{100}{101}| = 102x.\)
4) Tính x:
\(\frac{3}{5} + \frac{2}{5} \cdot \left( \frac{2}{3} - x \right) = \frac{1}{2};\)
b) \(\frac{1}{4} + \frac{2}{6} \cdot \frac{3}{8} \ldots \frac{14}{30} \cdot \frac{15}{32} = 1 - \frac{1}{2} \cdot x.\)
c) \(|x + \frac{1}{101}| + |x + \frac{2}{101}| + \ldots + |x + \frac{100}{101}| = 102x.\)