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tanyatrebunski
@tanyatrebunski
November 2021
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Номер 1. 1,2 + 3,8:( 2 [tex] \frac{5}{18} [/tex] - 5 [tex] \frac{1}{12} [/tex] + 1 [tex] \frac{2}{9} [/tex] )
Номер 2. 0,1+1,9:( [tex] \frac{4}{5} [/tex] - [tex] \frac{2}{3} [/tex] - 1 [tex] \frac{1}{12} [/tex] )
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Regent1828
Verified answer
1). 1,2 + 3,8 : (2 5/18 - 5 1/12 + 1 2/9) = 1,2 + 3,8 : (82/36 - 183/36 + 44/36) =
= 1,2 + 3,8 : (-57/36) = 1,2 - 3,8 * 12/19 = 1,2 - 38/10 * 12/19 = 1,2 - 24/10 =
= 1,2 - 2,4 = - 1,2
1. 2 5/18 - 5 1/12 + 1 2/9 = 82/36 + 44/36 - 183/36 = - 57/36 = - 19/12
2. 3,8 : ( - 19/12) = - 38/10 * 12/19 = - 24/10 = - 2,4
3. 1,2 - 2,4 = - 1,2
2). 0,1 + 1,9 : (4/5 - 2/3 - 1 1/12) = 0,1 + 1,9 : (48/60 - 40/60 - 65/60) =
= 0,1 + 1,9 : (- 57/60) = 0,1 - 1,9 * 20/19 = 0,1 - 19/10 * 20/19 = 0,1 - 2 = -1,9
1. 4/5 - 2/3 - 1 1/12 = 48/60 - 40/60 - 65/60 = - 57/60 = - 19/20
2. 1,9 : ( - 19/20) = - 19/10 * 20/19 = - 2
3. 0,1 - 2 = - 1,9
2 votes
Thanks 1
tanyatrebunski
СПАСИБО!!!
Regent1828
Да не за что..))
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Answers & Comments
Verified answer
1). 1,2 + 3,8 : (2 5/18 - 5 1/12 + 1 2/9) = 1,2 + 3,8 : (82/36 - 183/36 + 44/36) == 1,2 + 3,8 : (-57/36) = 1,2 - 3,8 * 12/19 = 1,2 - 38/10 * 12/19 = 1,2 - 24/10 =
= 1,2 - 2,4 = - 1,2
1. 2 5/18 - 5 1/12 + 1 2/9 = 82/36 + 44/36 - 183/36 = - 57/36 = - 19/12
2. 3,8 : ( - 19/12) = - 38/10 * 12/19 = - 24/10 = - 2,4
3. 1,2 - 2,4 = - 1,2
2). 0,1 + 1,9 : (4/5 - 2/3 - 1 1/12) = 0,1 + 1,9 : (48/60 - 40/60 - 65/60) =
= 0,1 + 1,9 : (- 57/60) = 0,1 - 1,9 * 20/19 = 0,1 - 19/10 * 20/19 = 0,1 - 2 = -1,9
1. 4/5 - 2/3 - 1 1/12 = 48/60 - 40/60 - 65/60 = - 57/60 = - 19/20
2. 1,9 : ( - 19/20) = - 19/10 * 20/19 = - 2
3. 0,1 - 2 = - 1,9