Question

$\frac{1}{2} \times \sqrt{ \frac{ \frac{2}{3} - \frac{7}{5} + 1 }{ \frac{2}{3} + 1} }$
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Answer 1

$\frac{1}{2} * \sqrt{\frac{\frac{2}{3}-\frac{7}{5}+1 }{\frac{2}{3}+1 } }\\\frac{1}{2} * \sqrt{\frac{\frac{10}{15}-\frac{21}{15}+1 }{\frac{2}{3}+\frac{3}{3} } }\\\frac{1}{2} * \sqrt{\frac{-\frac{11}{15}+\frac{15}{15} }{\frac{5}{3} } }\\\frac{1}{2} * \sqrt{\frac{4}{15} * \frac{3}{5} }\\\frac{1}{2} * \sqrt{\frac{12}{75} }\\\frac{1}{2} * \sqrt{\frac{4}{25} }\\\frac{1}{2}* \frac{\sqrt{4} }{\sqrt{25} } \\\frac{1}{2}*\frac{2}{5}\\\frac{2}{10} \\\frac{1}{5}$