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mashakim11

Ответ:

1. 1)5/6 – 1/3 = 1/2

2)1/3 – 5/6 = -1/2

3)1/2 : -1/2 = 1/2*-2/1 = –1

2. 1) 1/2 – 2/3 = - 1/6

2) 2/3 - 1/2 = 1/6

3) -1/6 : 1/6 = –1

3. 1) 1,7 - 2 = -0.3

2) 2 - 1.7 = 0.3

3) -0.3 : 0.3 = – 1

4. 1) 0.9 – 3 = -2.1

2) 3 – 0.9 = 2.1

3) -2.1 : 2.1 = –1

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