Ответ:
1. -5+7=2; A
2. -3-(-10) = 7; A
3. 7.5+x = 6.5
x = 6.5 - 7.5 = -1
Відповідь: Б
4. -3+(-4)+(-5) = -12; А
5. 3.8 + (-7.3) = -3.5
-6.6 + (-12) = -18.6
2.8 - 5.3 = -2.5
-19.6 - 4.6 = -24.2
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Ответ:
1. -5+7=2; A
2. -3-(-10) = 7; A
3. 7.5+x = 6.5
x = 6.5 - 7.5 = -1
Відповідь: Б
4. -3+(-4)+(-5) = -12; А
5. 3.8 + (-7.3) = -3.5
-6.6 + (-12) = -18.6
2.8 - 5.3 = -2.5
-19.6 - 4.6 = -24.2