Question

Question
Take a = -6, b = 9, c = 5
1) a+b=b+a
2) a-b ≠ b-a
3) a+ (b+c) = (a+b)+c
4) a-(b-c) ≠ (a-b)-c
5) b+0=b


Please solve as fast as can you ​

Answer 1

Answer:

1) 6+9=9+6

2) 6-9=9-6

3) 6+(9+5)=(6-9)-5

4) 6-(9-5)=(6-9)-5

5) 9+0=9

Answer 2

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