A=1/(3 ) – 3/(4 ) – (-3)/5 + 1/72 – 2/9 – 1/36 +1/15 B=1/5 – 3/(7 ) + 5/9 – 2/11 + 7/13 – 9/16 – 7/13 + 2/11 – 5/9 +3/7 – 1/5

29/07/2021 Bởi Rose

A=1/(3 ) – 3/(4 ) – (-3)/5 + 1/72 – 2/9 – 1/36 +1/15
B=1/5 – 3/(7 ) + 5/9 – 2/11 + 7/13 – 9/16 – 7/13 + 2/11 – 5/9 +3/7 – 1/5

0 bình luận về “A=1/(3 ) – 3/(4 ) – (-3)/5 + 1/72 – 2/9 – 1/36 +1/15 B=1/5 – 3/(7 ) + 5/9 – 2/11 + 7/13 – 9/16 – 7/13 + 2/11 – 5/9 +3/7 – 1/5”

halan

29/07/2021 vào lúc 18:09

`A=1/3 – 3/4 – (-3)/5 + 1/72 – 2/9 – 1/36 +1/15`

`A = (1/3 + 3/5 + 1/15) – (3/4 + 2/9 + 1/36) + 1/72`

`A = 1 – 1 + 1/72`

`A = 1/72`.

`B=1/5 – 3/7 + 5/9 – 2/11 + 7/13 – 9/16 – 7/13 + 2/11 – 5/9 +3/7 – 1/5`

`A = (1/5 – 1/5) + (-3/7 + 3/7) + (5/9 – 5/9) + (-2/11 + 2/11) + (7/13 – 7/13) – 9/16`

`A = 0 + 0 + 0 + 0 + 0 – 9/16`

`A = -9/16`.

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ngochoa

29/07/2021 vào lúc 18:10

$A = \frac{1}{3} - \frac{3}{4} - \frac{- 3}{5} + \frac{1}{72} - \frac{2}{9} - \frac{1}{36} + \frac{1}{15}$

$A = (\frac{1}{3} + \frac{3}{5} + \frac{1}{15}) - (\frac{3}{4} + \frac{2}{9} + \frac{1}{36}) + \frac{1}{72}$

$A = 1 - 1 + \frac{1}{72}$

$A = \frac{1}{72}$

$B = \frac{1}{5} - \frac{3}{7} + \frac{5}{9} - \frac{2}{11} + \frac{7}{13} - \frac{9}{16} - \frac{7}{13} + \frac{2}{11} - \frac{5}{9} + \frac{3}{7} - \frac{1}{5}$
$A = (\frac{1}{5} - \frac{1}{5}) + (- \frac{3}{7} + \frac{3}{7}) + (\frac{5}{9} - \frac{5}{9}) + (- \frac{2}{11} + \frac{2}{11}) + (\frac{7}{13} - \frac{7}{13}) - \frac{9}{16}$

$A = 0 + 0 + 0 + 0 + 0 - \frac{9}{16}$

$A = - \frac{9}{16}$

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