даю 58 балов решите следующие пропорции
1)1,4/ 2целых 1 3= 0,2х/3
2) 2целых 1 7/2,5=8,4/7х
3)4,5х,2,7=9/1,8
4)7 целых 1 3 / 1 целую 5 6 = 0,6/ 0,75
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