Question

Решите уравнение 3,8/6 = 7х/4,2.

Answer 1

$\frac{3.8}{3} = \frac{7x}{4.2} \\ \\ \frac{ \frac{19}{5} }{6} = \frac{ \frac{7x}{21} }{5} \\ \\ \frac{19}{30} = \frac{5x}{3} \\ \\ 57 = 150x \\ \\ 150x = 57 \\ \\ x = \frac{57}{150} \\ \\ x = \frac{19}{50}$

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