Respuesta :

Answer:

1. 1+(2+3)

2. (1 +2)+3

3. (2*3)*4

4. 2*(3*4)

5. 3*2

6. 2+1

7. 2(x+3)

8. 4x+3

9. (4*3)+(4*2)

10. (-2*5)+(-2*x)

11. (3*10)-(3*y)

12. (-3*4)-(-3*x)

13. commutative property

14. commutative property

15. distributive property

16. associative property

17. 1+(-3)

18. 4+3

19. -(-4-3)

20. -4+3

Hope this helps