Mathematics

Chase Zhang

2 September, 01:17

Which of the following statements are true? Select all that apply.

1. for all real numbers A and B, A+B=B+A

2. for all real numbers A and B, AB=BA

3. for all real numbers A and B, A-B=B-A

4. for all real numbers A, B and C, (A+B) + C = A + (B+C)

5. for all real numbers A, B and C, (A-B) - C = A - (B-C)

6. for all real numbers A, B and C, A (B+C) = AB+AC