Question

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Answer 1

Respuesta:

$1.\frac{7}{5} +\frac{4}{11} =\frac{77+20}{55} =\frac{97}{55} \\2. \frac{7}{4} -\frac{5}{6} =\frac{21-10}{12} =\frac{11}{12} \\3.\frac{2}{3} -\frac{4}{5} +\frac{1}{2}=\frac{20-24+15}{30} =\frac{11}{30} \\4.\frac{1}{6} +\frac{7}{4} -\frac{3}{8} =\frac{4+42-9}{24} =\frac{37}{24} \\5.\frac{1}{3} -(\frac{5}{6} -\frac{3}{4} )=\frac{1}{3} -(\frac{10-9}{12} )=\frac{1}{3} -\frac{1}{12} =\frac{4-1}{12}=\frac{3}{12} =\frac{1}{4}$

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