Question

Va rog din suflet sa ma ajutati!

Answer 1

Răspuns

Explicație pas cu pas:

Avem asa: $f=\frac{27}{25} :1\frac{5}{49} +\frac{36}{35} :2\frac{6}{7} =\frac{27}{25}:\frac{54}{49} +\frac{36}{35} :\frac{20}{7} =\frac{27}{25} *\frac{49}{54} +\frac{36}{35} *\frac{7}{20} .$

dupa simplificare obtinem:

$f=\frac{49}{50} +\frac{24}{7} =\frac{49*7}{50*7} +\frac{24*50}{7*50} =\frac{343+1200}{350} =\frac{1543}{350}$

Inversul este:

$\frac{1}{f} =\frac{350}{1543}$