1. You can factor the numerator and denominator to see if any of the terms can cancel one another out.
3. True. Multiplication and division do not require finding the LCD because the denominators can be combined through those operations, whereas addition and subtraction require like terms.
5. y+6y+5
7. 3b+3
9. 2x+2x+4
11. a−3a+3
13. 7n−33n−8
15. c+6c−6
17. 1
19. 25d2−1d2−25
21. t+3t+5
23. 6x+56x−5
25. 4p+3p+6
27. d+112d+9
29. 3b−112b+5
31. y+44y−1
33. xy10x+4y
35. a2−2a−39a−7
37. y2−y−22y2−y+9
39. z2−z−25z2+z+5
41. x+xy+y+1x+2xy+y
43. ab22b+7a
45. 4b18+ab
47. a−b
49. 2c2+5c+23c2+3c−2
51. x−115x+7
53. x−9x+9
55. y+21
57. 4
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College Algebra.Provided by: OpenStaxAuthored by: OpenStax College Algebra.Located at: https://cnx.org/contents/9b08c294-057f-4201-9f48-5d6ad992740d@3.278:1/Preface.License: CC BY: Attribution.