Question

Решите уравнение решите
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Answer 1

Ответ:

$\frac{x + 1.3}{x - 6.4} = \frac{11.6 - 2 .65}{0.35 + 0. 9} \\ (x - 6.4)(11.6 - 2.65) = (x + 1.3)(0.35 + 0.9) \\ 8.95(x - 6.4) = 1.25(x + 1.3) \\ 8.95x - 57.28 = 1.25x + 1.625 \\ 8.95x - 1.25x = 1.625 + 57 . 28 \\ 7.7x = 58.905 \\ x = 58.905 \div 7.7 \\ x = 7.65$