Question

3. Решите уравнение: 2•(х-2⅒)+4⅕=5⅓

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Answer 1

$\displaystyle 2(x-2\frac{1}{10})+4\frac{1}{5}=5\frac{1}{3}\\\\ 2(x-\frac{21}{10})+\frac{21}{5}=\frac{16}{3}\\\\ 2x-\frac{21}{5}+\frac{21}{5}=\frac{16}{3}\\\\ 2x=\frac{16}{3}\\\\ x=\frac{8}{3}=2\frac{2}{3}$