Tìm x, biết
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Bài 3: Tìm x, biết:
a) \( x + \frac{2}{9} = -\frac{1}{3} \)
b) \( x - \frac{2}{5} = -\frac{7}{30} \)
c) \( \frac{2}{3} - x = -\frac{5}{3} \)
d) \( 2 \cdot \frac{2}{7} - x = -\frac{3}{14} \)
e) \( -\frac{5}{8} < \frac{x}{16} < -\frac{1}{2} \quad (x \in \mathbb{Z}) \)
f) \( x - \frac{20}{11 \cdot 13} - \frac{20}{13 \cdot 15} - \ldots - \frac{20}{53 \cdot 55} = \frac{3}{11} \)
Bài 3: Tìm x, biết:
a) \( x + \frac{2}{9} = -\frac{1}{3} \)
b) \( x - \frac{2}{5} = -\frac{7}{30} \)
c) \( \frac{2}{3} - x = -\frac{5}{3} \)
d) \( 2 \cdot \frac{2}{7} - x = -\frac{3}{14} \)
e) \( -\frac{5}{8} < \frac{x}{16} < -\frac{1}{2} \quad (x \in \mathbb{Z}) \)
f) \( x - \frac{20}{11 \cdot 13} - \frac{20}{13 \cdot 15} - \ldots - \frac{20}{53 \cdot 55} = \frac{3}{11} \)