Question

11/2 ÷ [{1/4-(1/6 - 1/30) } +1/15​

Answer 1

Answer:

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Answer 2

$\frac{11}{2} \div( (\frac{1}{4} - ( \frac{1}{6} - \frac{1}{30} )) + \frac{1}{15} ) \\ = \frac{11}{2} \div (( \frac{1}{4} - ( \frac{5 - 1}{30} )) + \frac{1}{15} \\ = \frac{11}{2} \div (( \frac{1}{4} - \frac{4}{30} ) + \frac{1}{15} \\ = \frac{11}{2} \div (( \frac{15 -8 }{60} ) + \frac{1}{15} \\ = \frac{11}{2} \div ( \frac{7}{60} + \frac{1}{15} ) \\ = \frac{11}{2} \div ( \frac{7 + 4}{60} ) \\ = \frac{11}{2} \div \frac{11}{60} \\ = \frac{11}{2} \times \frac{60}{11} \\ = \frac{60}{2} \\ = 30$