Question

45. Решите уравнение:
$x - \frac{5}{9}x = 2 \frac{1}{4}$
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Answer 1

$x - \frac{5}{9}x = \frac{9}{4}\\\frac{9}{9}x - \frac{5}{9}x = \frac{9}{4}\\\frac{9-5}{9}x=\frac{9}{4}\\\frac{4}{9}x = \frac{9}{4}\\x = \frac{9}{4} : \frac{4}{9}\\x = \frac{81}{16}\\x = 5\frac{1}{16}$