Question

√1,69:0,5-2,6

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Answer 1

$\sqrt{1,69} \div 0,5 - 2,6 \\ \\ \sqrt{ \frac{169}{100} } \div 0,5 - 2,6 \\ \\ \sqrt{ \frac{169}{100} } \div \frac{1}{2} - 2,6 \\ \\ \sqrt{ \frac{169}{100} } \div \frac{1}{2} - \frac{13}{5} \\ \\ \frac{13}{10} \div \frac{1}{2} - \frac{13}{5} \\ \\ \frac{13}{10} \times 2 \: \: \frac{13}{5} \\ \\ \frac{13}{5} - \frac{13}{5} \\ \\ = 0$