Question

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Answer 1

$frac{5}{7} - 0.4 + frac{11}{14} = frac{5}{7} - frac{2}{5} + frac{11}{14} = \ = frac{10 + 11}{14} - frac{2}{5} = frac{21}{14} - frac{2}{5} = \ = frac{3}{2} - frac{2}{5} = frac{15 - 4}{10} = frac{11}{10} = 1.1$