Question

Exercițiul 8 vă rog urgent!!!!!​

Answer 1

Răspuns:

Explicație pas cu pas:

a) 1/21 + 1/14 = 2/42 + 3/42 = 5/42

1/14 - 1/21 = 3/42 - 2/42 = 1/42

1/35 - 1/42 = 6/210 - 5/210 = 1/210

5/42 - 1/210 + 1/42 = 6/42 - 1/210 = 30/210 - 1/210 = 29/210

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b) 25/6 - 10/9 = 75/18 - 20/18 = 55/18

11/8 - 7/24 = 33/24 - 7/24 = 26/24 = 13/12

1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6

55/18 - 13/12 + 1/6 = 110/36 - 39/36 + 6/36 = 77/36

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c) 5/9 + 3/2 + 11/18 = 10/18 + 28/18 + 11/18 = 49/18

11/6 - 1/3 - 1/18 = 33/18 - 6/18 - 1/18 = 26/18

1/6 + 3/4 + 7/12 = 2/12 + 9/12 + 7/12 = 18/12 = 3/2 = 27/18

49/18 - 26/18 + 27/18 = 50/18 = 25/9