Question

x=2,(5)×(3/5)supra 2 - 2/15 ×1,5​

Answer 1

Răspuns:

$2.(5) \times \frac{3}{5} \div 2 - \frac{2}{15} \times 1.5 = \\ \frac{25 - 2}{9} \times \frac{3}{5} \times \frac{1}{2} - \frac{2}{15} \times \frac{15}{10} = \\ \frac{23}{9} \times \frac{3}{5} \times \frac{1}{2} - \frac{2}{10} = \\ \frac{23}{15} \times \frac{1}{2} - \frac{2}{10} = \\ \frac{23}{30} - \frac{2}{10} = \\ \frac{23 - 6}{30} = \\ = \frac{17}{30}$