1. Обчислити –8 + (–18).
А –26 Б –10 В 10 Г 26

2. Обчислити 17 + (–27).
А –26 Б –10 В 10 Г 26

3. Обчислити –6 – (–16).
А –26 Б –10 В 10 Г 26

4. Обчислити зручним способом –5.2 + (–4.1) + 5.2 + (–3.5) + 5.7.
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