4:4 4/5+2 2/7 * 5 1/4 - 7 11/12. Created by lera123451922. matematika-ru

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lera123451922 @lera123451922

July 2022 1 8 Report

4:4 4/5+2 2/7 * 5 1/4 - 7 11/12

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prettypushkova

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4 : 4 4/5 + 2 2/7 * 5 1/4 - 7 11/12 = 4 11/12

1) 4 : 4 4/5 = 4 : 24/5 = 4 * 5/24 = 20/24 = 5/6
2) 2 2/7 * 5 1/4 = 16/7 * 21/4 = (4*3)/(1*1) = 12
3) 5/6 + 12 = 12 5/6
4) 12 5/6 - 7 11/12 = 12 10/12 - 7 11/12 = 11 22/12 - 7 11/12 = 4 11/12

Пояснения:
4 4/5 = (4*5+4)/5 = 24/5
2 2/7 = (2*7+2)/7 = 16/7
5 1/4 = (5*4+1)/4 = 21/4
5/6 = (5*2)/(6*2) = 10/12 - доп.множ. 2

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lera123451922 July 2022 | 0 Ответы

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