Пожалуйста не игнорируйте, вычислите с решением дроби

1.3/7 + 2/7 = (3+2)/7 = 5/72. 4/5 + 1/2 = 8/10 + 5/10 = (8+5)/10 = 13/10 = 1 3/10 Одна целая три десятых3. 1/2 + 1/5 + 1/10 = 5/10 + 2/10 + 1/10 == (5+2+1)/10 = 8/10 = 4/54. 5/7 - 9/14 = 10/14 - 9/14 = (10-9)/14 = 1/145. 1 - 2/9 = 9/9 - 2/9 = (9-2)/9 = 7/9

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3/7 + 2/7 = 5/74/5 + 1/2 = 8/10 + 5/10 = 13/10 = 1 3/101/2 + 1/5 + 1/10 = 5/10 + 2/10 + 1/10 = 8/105/7 - 9/14 = 10/14 - 9/14 = 1/141 - 2/9 = 7/9