Найдите х в пропорции:
1) 5/6 = 2х/3
2) 4/9 = 8х/45
3) 5х/12 = 2/3
4) 6/7 = 10х/21
5) 8/9 = 4х/21
6) 27/5х = 9/16
1) 5/6 = 2х/3
2) 4/9 = 8х/45
3) 5х/12 = 2/3
4) 6/7 = 10х/21
5) 8/9 = 4х/21
6) 27/5х = 9/16
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Answers & Comments
2)9*8х=4*45 72х=180 х=180/72 х=2,5
3)5х*3=12*2 15х=24 х=24/15 х=1,6
4) 7*10х=6*21 70х=126 х=126/70 х=1,8
5) 9*4х=8*21 36х=168 х=168/36=14/3=4 2/3