Nico20100ask
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Messyyask

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1. prima o amplifici cu 2 si iese 4/10+3/10=7/10

2. a doua o amplifici cu 3 si iese 2/9+6/9=8/9

3. prima O amplifici cu 2 si iese 6/8+5/8=11/8=1 si 3/8

4.a doua o amplifici cu 4 si iese 7/8+4/8=11/8

5.prima O amplifici cu 2 si iese 2/4+1/4=3/4

6.a doua o amplifici cu 2 si iese 3/10+4/10=7/10

7. a doua o amplifici cu 2 si iese 1/6+4/6=5/6

8.prima O amplifici cu 4 si iese 12/20+1/20=13/20

Dragospopamarianask

Buna!! Te voi ajuta eu! Trebuie sa scri numaratorii deasupra celui mai mic numitor comun x.

.[tex]a) \frac{2}{5} + \frac{3}{10} = \frac{4+3}{10} = \frac{7}{10} \\\\b) \frac{2}{9} + \frac{2}{3} = \frac{2+6}{9} = \frac{8}{9} \\\\c) \frac{3}{4} + \frac{5}{8} = \frac{6+5}{8} = \frac{11}{8} \\\\d) \frac{7}{8} + \frac{1}{2} = \frac{7+4}{8} = \frac{11}{8} \\\\e) \frac{1}{2} + \frac{1}{4} = \frac{2+1}{4} = \frac{3}{4}\\\\f) \frac{3}{10} + \frac{2}{5} = \frac{3+4}{10} = \frac{7}{10} \\\\g) \frac{1}{2} + \frac{2}{3} = \frac{1+4}{6} = \frac{5}{6} \\\\[/tex]

[tex]h) \frac{3}{5} + \frac{1}{20} = \frac{12+1}{20} = \frac{13}{20}[/tex]

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