Question

Срочно нужно! 50 БАЛЛ​

Answer 1

Ответ:

$x = 3$

Пошаговое объяснение:

$\frac{\frac{2}{9} }{\frac{5}{9} x - \frac{1}{2} } + \frac{1}{7} = \frac{1}{3}$

$\frac{\frac{2}{9} }{\frac{10x - 9}{18} } + \frac{1}{7} = \frac{1}{3}$

$\frac{2 * 18}{9(10x - 9)} + \frac{1}{7} = \frac{1}{3}$

$\frac{2 * 2}{10x - 9} + \frac{1}{7} = \frac{1}{3}$

$\frac{(4 * 7 * 3) + 3(10x - 9) - 7(10x-9)}{7*3*(10x-9)} = 0$

$\frac{84 + 30x - 27 - 70x + 63}{21(10x-9)} = 0$

$\frac{120 - 40x}{21(10x-9)} = 0$

$120 - 40x = 0\\21(10x - 9) \neq 0$

$40x = 120\\10x \neq 9$

$x = \frac{120}{40} \\x \neq 0,9$

$x = 3$

Answer 2

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