помогите решить уравнение
[tex] \frac{192}{x} - \frac{192}{x + 10} = \frac{4}{15} [/tex]
должно получится
[tex] {x}^{2} + 10 x - 7200 = 0[/tex]
-90-не подходит по услов;
Ответ:80​
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