Question

(2/3+513/10:9) :3intregi 71/100-1/3 va rog frumos​

Answer 1

Răspuns:

513/371

$( \frac{2}{3} + \frac{513}{10} \div 9) \div 3 \frac{71}{100} - \frac{1}{3} \\ = ( \frac{2}{3} + \frac{513}{10 \times 9} ) \div \frac{371}{100} - \frac{1}{3} \\ = ( \frac{2}{3} + \frac{57}{10} ) \times \frac{100}{371} - \frac{1}{3} \\ = \frac{20 + 171}{30 } \times \frac{100}{371} - \frac{1}{3} \\ = \frac{191 \times 10}{3 \times 371} - \frac{1}{3} \\ = \frac{1910 - 371}{1113} \\ = \frac{1539}{1113} \\ = \frac{513}{371} = 1 \frac{142}{371}$