Можно ли составить из этих отношений пропорцию (538-539):
538. 1) 9: 24 H 3 :8; | 2) 1:9 H 4: 36: | 3) 12:22 | 11: 6?
539. 1) 0,1: 0,05 u 0,8: 0,4;
2) 4:3; 13,5 : 10,52​
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