Question

ajutor pe 2 si pe 3 urgență dar daca ati putea sa faceti pe o coala si sa trm poza ar fi mai bine va rog frumos sau daca nu explicați tot ce facetiii va rog ​

Answer 1

Răspuns:

2)

$2 \frac{5}{6} - 2 \frac{2}{9} \div 4 \frac{1}{6} =$

$\frac{2 \times 6 + 5}{6} - \frac{2 \times 9 + 2}{9} \div \frac{4 \times 6 + 1}{6} =$

$^{6)} \frac{17}{6} - ^{4)} \frac{20}{9} \div \frac{25}{6} =$

$\frac{17}{6} - \frac{4}{3} \times \frac{2}{5} =$

$\frac{17}{6} - \frac{8}{15} =$

$\frac{23}{10}$

3)

$\frac{27}{25} \div 1 \frac{5}{49} - \frac{36}{35} \div 2 \frac{6}{7} =$

$\frac{27}{25} \div \frac{1 \times 49 + 5}{49} - \frac{36}{35} \div \frac{2 \times 7 + 6}{7} =$

$\frac{27}{25} \div \frac{54}{49} - \frac{36}{35} \div \frac{20}{7} =$

$\frac{27}{25} \times \frac{49}{54} - \frac{36}{35} \times \frac{7}{20} =$

$\frac{1}{25} \times \frac{49}{2} - \frac{9}{5} \times \frac{1}{5} =$

$\frac{49}{50} - ^{2)} \frac{9}{25} =$

$\frac{49}{50} - \frac{18}{50} =$

$\frac{31}{50}$

$inversul \: sau \: = \frac{50}{31}$