Tính hợp lý

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Bài 2 Tinh hợp lý
a) \( \frac{1}{3} + \frac{2}{11} + \frac{3}{8} \)
b) \( \frac{11}{18} + \frac{2}{7} + \frac{19}{18} \)
c) \( -\frac{1}{9} - \frac{3}{7} \)
d) \( \frac{23}{10} + \frac{11}{10} \)
e) \( \left( -\frac{4}{3} \right) + \frac{1}{9} = \frac{7}{9} \)
f) \( -\frac{19}{3} + -\frac{25}{19} + \frac{4}{3} \)
g) \( \frac{1}{3} + -\frac{3}{7} + \frac{2}{7} \)
h) \( 16 \div 7 - \left( \frac{3}{5} - \frac{1}{5} \right) \)
i) \( 16 \div 7 - \left( \frac{1}{3} \right) \)
j) \( \left( \frac{4}{9} - \frac{3}{5} \right) + \left( \frac{1}{5} - \frac{5}{18} \right) \)
k) \( \left( -\frac{3}{4} \right) + \frac{2}{7} + \left( \frac{3}{5} - \frac{1}{4} \right) \)
l) \( \left( \frac{5}{9} - \frac{3}{11} - \frac{17}{11} - \frac{5}{18} \right) \)