Respuesta :

calvinrocks808

Answer:

Not to sure about these but I'll do my best

Step-by-step explanation:

4. 3x + 21

5. 25 -5x

6. 8x - 16

7. 5x + 8

8. 2(x + 3)

9. 7(2-x)

10. 5(x - 2)

11. x(x + 4)

12. a Sarah is right

12. b emily made a mistake when she added 11 + 4 instead of multiplying 11 times 3

Plz make brainliest if correct

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good job