1) 1 2\7 + 1 1\27 = 9\7 + 28\27 - общий знаменатель 189 - 243\189 + 196\189 = 439\189
2) 49 : 439\189 = 49 * 189\439 = 9261\439
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1) 1 2\7 + 1 1\27 = 9\7 + 28\27 - общий знаменатель 189 - 243\189 + 196\189 = 439\189
2) 49 : 439\189 = 49 * 189\439 = 9261\439