найдите неизвестный член пропорции
1)х/14=9/18
2)х/2=15/5
3)12/х=20/5
4)2/10=х/25
5)21/3=35/х
6)18/3=х/4
1)х/14=9/18
2)х/2=15/5
3)12/х=20/5
4)2/10=х/25
5)21/3=35/х
6)18/3=х/4
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Answers & Comments
х = 9 * 14 / 18
х = 126 / 18
х = 7
2) 5х = 2*15
5х = 30
х = 30:5
х = 6
3) 20х = 12*5
20х = 60
х = 60 :20
х = 3
4) 10х = 2*25
10х = 50
х = 50:10
х = 5
5) 21х = 35* 3
21х = 105
х = 105 :21
х = 5
6) 3х = 18*4
3х = 72
х = 72:3
х=24