2 1/2×x+2 1/5=5 19/20. Created by Katerina1katrin. algebra-ru

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Ответ:

$2 \ \frac{1}{2} \times x + 2 \frac{1}{5} = 5 \ \frac{19}{20} \\ \frac{5}{2} x + \frac{11}{5} = \frac{119}{20} \\ 50x + 44 = 119 \\ 50x = 119 - 44 \\ 50x = 75 \\ x = 75 \div 50 \\ x = \frac{3}{2} = 1.5$

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