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ДарьяМайорова
@ДарьяМайорова
June 2022
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x : 3 = 2 1/7 : 5/7
5 : х = 35 : 14
х : 45 = 28 : 20
52 :14 = 26 : х
120 : х = 24 : 8
Решите пропорции,распишите.Заранее спасибо.
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tatsach
X : 3 = 2 1/7 : 5/7
5/7x=3*2 1/7
5/7x=45/7
x=45/7:5/7=45/7*7/5
x=9
5 : х = 35 : 14
35x=14*5
35x=70
x=70:35
х=2
х : 45 = 28 : 20
20х=45*28
20х=1260
х=1260:20
х=63
52 :14 = 26 : х
52х=14*26
52х=364
х=364:52
х=7
120 : х = 24 : 8
24х=120*8
24х=960
х=960:24
х=40
1 votes
Thanks 4
ДарьяМайорова
Спасибо
tatsach
пж
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Answers & Comments
5/7x=3*2 1/7
5/7x=45/7
x=45/7:5/7=45/7*7/5
x=9
5 : х = 35 : 14
35x=14*5
35x=70
x=70:35
х=2
х : 45 = 28 : 20
20х=45*28
20х=1260
х=1260:20
х=63
52 :14 = 26 : х
52х=14*26
52х=364
х=364:52
х=7
120 : х = 24 : 8
24х=120*8
24х=960
х=960:24
х=40