Question

3 2/5 * (9x + 0, 8) - 15, 17 = 24, 27
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По действиям дам 10 баллов​

Answer 1

$3 \frac{2}{5} \times (9x + 0.8) - 15.17 = 24.27 \\ \frac{17}{5} \times (9x + 0.8) - 15.17 = 24.27 \\ \frac{17}{5} \times (9x + \frac{4}{5} ) - 15.17 = 24.27 \\ \frac{17}{5} \times (9x + \frac{4}{5} ) - \frac{1517}{100} = 24.27 \\ \frac{17}{5} \times (9x + \frac{4}{5} ) - \frac{1517}{100 } = \frac{2427}{100} \\ \frac{153}{5} x + \frac{68}{25} - \frac{1517}{100} = \frac{2427}{100} \\ \frac{153}{5} x - \frac{249}{20} = \frac{2427}{100} \\ 3060x - 1245 = 2427 \\ 3060x = 2427 + 1245 \\ 3060x = 3672 \\ x = \frac{6}{5}$