Question

repede va rog jsekkwdb2o​

Answer 1

Răspuns:

Ai rezolvarea pe foaia de hârtie

Answer 2

Răspuns:

$a \: ) \: \frac{2}{7} + \frac{3}{7} = \frac{5}{7}$

$b) \frac{4}{32} + \frac{19}{32} + \frac{8}{32} = \frac{31}{32}$

$c) \: \frac{4}{15} + ( \frac{8}{15} - \frac{3}{15} ) = \frac{4}{15} + \frac{5}{15} = \frac{9}{15}$

$d) \frac{11}{20} - \frac{9}{20} = \frac{2 {}^{2} }{20} = \frac{1}{10}$

$e) \frac{40}{99} - \frac{27}{99} - \frac{8}{99} = \frac{5}{99}$

$f) \frac{2}{39} + ( \frac{35}{39} - \frac{17}{39} + \frac{4}{39} ) = \frac{2}{39} + ( \frac{18}{39} + \frac{4}{39} ) = \frac{2}{39} + \frac{22}{39} = \frac{24 {}^{2} }{39} = \frac{8}{13}$