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Medzimu
@Medzimu
July 2022
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Решите пример пож с действиями (тоесть какое 1 какое второе действие)
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Dafna1621
Verified answer
1) 6 (7/12) - 3 (17/36) = 79/12 - 125/36 = 79/12 (и числитель, и знаменатель *3) - 125/36 = 237/36 - 125/36 = 112/36 = 28/9.
2) 28/9 * 2,5 = 28/9 * 5/2 = (28*5)/(9*2) = 140/18 = 70/9.
3) 4 (1/3) : 0,65 = 13/3 : 65/100 = 13/3 : 13/20 = 13/3 * 20/13 = 20/3.
4) 70/9 - 20/3 = 70/9 - 60/9 = 10/9 = 1 (1/9).
Ответ: 1 (1/9).
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sangers1959
Verified answer
1. 6⁷/₁₂-3¹⁷/₃₆=79/12-125/36=(79*3-125)/36=(237-125)/36=112/36=28/9.
2. (28/9)*2,5=61/18*2¹/₂=(28/9)*(5/2)=70/9.
3. (4¹/₃)/0,65=(4¹/₃)/(65/100)=(13/3)/(13/20)=(13*20)/(3*13)=20/3.
4. 70/9-20/3=(70-20*3)/9=(70-60)/9=10/9=1¹/₉.
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Answers & Comments
Verified answer
1) 6 (7/12) - 3 (17/36) = 79/12 - 125/36 = 79/12 (и числитель, и знаменатель *3) - 125/36 = 237/36 - 125/36 = 112/36 = 28/9.2) 28/9 * 2,5 = 28/9 * 5/2 = (28*5)/(9*2) = 140/18 = 70/9.
3) 4 (1/3) : 0,65 = 13/3 : 65/100 = 13/3 : 13/20 = 13/3 * 20/13 = 20/3.
4) 70/9 - 20/3 = 70/9 - 60/9 = 10/9 = 1 (1/9).
Ответ: 1 (1/9).
Verified answer
1. 6⁷/₁₂-3¹⁷/₃₆=79/12-125/36=(79*3-125)/36=(237-125)/36=112/36=28/9.2. (28/9)*2,5=61/18*2¹/₂=(28/9)*(5/2)=70/9.
3. (4¹/₃)/0,65=(4¹/₃)/(65/100)=(13/3)/(13/20)=(13*20)/(3*13)=20/3.
4. 70/9-20/3=(70-20*3)/9=(70-60)/9=10/9=1¹/₉.