Question

Va rog,dau coroana,repede va rog!!!!!!!!!!

Answer 1

a) 1/4 + 5/4 = (1 + 5)/4 = 6/4 (simplificare cu 2) = 3/2

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b) 7/9 - 1/9 = (7 - 1)/9 = 6/9 (simplificare cu 3) = 2/3

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c) 2 3/5 - 4/5 = ?

2 3/5 = (2 × 5 + 3)/5 = 13/5

13/5 - 4/5 = (13 - 4)/5 = 9/5

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d) 2/3 + 1/6 = 4/6 + 1/6 = (4 + 1)/6 = 5/6

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e) (amplificare cu 2) 5/18 + 7/12 (amplificare cu 3) = 10/36 + 21/36 = (10 + 21)/36 = 31/36

Answer 2

$a) \: \frac{1}{4} + \frac{5}{4} = \frac{6}{4} = \frac{3}{2}$

$b ) \: \frac{7}{9} - \frac{1}{9} = \frac{6}{9} = \frac{2}{3}$

$c) \: 2 \frac{3}{5} - \frac{4}{5} = \frac{13}{5} - \frac{4}{5} = \frac{9}{5}$

$d ) \: \frac{2}{3} + \frac{1}{6} = \frac{4}{6} + \frac{1}{6} = \frac{5}{6}$

$e) \: \frac{5}{18} + \frac{7}{12} = \frac{10}{36} + \frac{21}{36} = \frac{31}{36}$