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Dashka111111156
@Dashka111111156
July 2022
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3 2/5 : x=6 4/5 : 1 1/3
Найдите х! )
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prettypushkova
Verified answer
3 2/5 : х = 6 4/5 : 1 1/3
3,4 : х = 6,8 : 4/3
3,4 : х = 6,8 * 3 : 4
3,4 : х = 5,1
х = 3,4 : 5,1 = 34/51 (сократим на 17)
х = 2/3
2 способ.
3 2/5 : х = 6 4/5 : 1 1/3 - это пропорция
17/5 : х = 34/5 : 4/3
х * 34/5 = 17/5 * 4/3 - свойство пропорции
34/5х = 68/15
х = 68/15 : 34/5 = 68/15 * 5/34 = (2*1)/3*1) = 2/3
х = 2/3
2 votes
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Answers & Comments
Verified answer
3 2/5 : х = 6 4/5 : 1 1/33,4 : х = 6,8 : 4/3
3,4 : х = 6,8 * 3 : 4
3,4 : х = 5,1
х = 3,4 : 5,1 = 34/51 (сократим на 17)
х = 2/3
2 способ.
3 2/5 : х = 6 4/5 : 1 1/3 - это пропорция
17/5 : х = 34/5 : 4/3
х * 34/5 = 17/5 * 4/3 - свойство пропорции
34/5х = 68/15
х = 68/15 : 34/5 = 68/15 * 5/34 = (2*1)/3*1) = 2/3
х = 2/3