Question

Помогите пожалуйста

Answer 1

Ответ: 210

$\frac{1}{6} x - 3 = 0 \\ \frac{1}{6} x = 3 \: \: \: \: \: | \times 6 \\ \frac{6}{6} x = 3 \times 6 \\ x = 18$

$- 0.6x + 7 = 0 \\ - 0.6x = - 7 \\ x = \frac{ - 7}{ - 0.6} \\ x = \frac{70}{6} \\ x = 11 \frac{4}{6} \\ x = 11 \frac{2}{3}$

$18 \times 11 \frac{2}{3} = \frac{18 \times 35}{3} = \frac{6 \times 35}{1} = 210$