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G-6: Like terms w/distributive property Pre-Algebra Name__________________________________ Period ______________ The last two lessons have covered the distributive property and combining like terms. Today you will use both ideas together. In general you will use the distributive property first to eliminate the parentheses and then combine the like terms. Remember: Distributive property: 5(2x – t) = 10x – 5t Like terms: 5x + 8x = 13x 11b – b = 10b -(x + 4) = -x – 4 3r + 10 – 2r = r + 10 Examples for today’s worksheet: Example 1: 5(r + 9) – 5 = 5r + 45 – 5 = 5r + 40 Example 2: -8 – 7(y + 2) = -8 –7y – 14 = -7y – 22 Las últimas dos lecciones se han tratado de la propiedad distributiva y los términos semejantes. Hoy se practicaran ambas ideas. En general usarás la propiedad distributiva primero para eliminar los paréntesis y luego combinarás los términos semejantes. Recuerda: Propiedad Distributiva: 5(2x – t) = 10x – 5t -(x + 4) = -x – 4 Términos Semejantes: 5x + 8x = 13x 11b – b = 10b 3r + 10 – 2r = r + 10 Ejemplos para la tarea de hoy: Ejemplo 1: 5(r + 9) – 5 = 5r + 45 – 5 = 5r + 40 Ejemplo 2: -8 – 7(y + 2) = -8 –7y – 14 = -7y – 22 Simplify each expression. (get rid of the parentheses and combine like terms) Simplifica cada expresión. (quita los paréntesis y combina los términos semejantes.) 1. 6y + y 2. 8u + 2u – 3u 3. –12 + 5g + 8 – g 4. –21w + 5 + 3w – 1 5. r + r + r + r 6. f – 3f + 2 – f + 1 7. 2a – 5(a + 1) 8. b – 2(b – 2) 9. 9 – t – 3(t + 3) 10. 4(y – 3) + 9 – 3y 11. 2(v – 5) + 7v + 4 12. 1 + 4(u – 1) 13. –18(c – 1) – 18 14. 12(n – 4) –3n 15. 6(r – 4) + r + 30 – 7r 16. x – 9x + 3 + 8x – 3 17. –5 + 5a – 4 – 2a + 3a 18. 21 – 8(v + 3) + 7v 19. 4x – 9 + 3x + 6 – 9x – 4 20. p – 2 + 1 – p + 1 + 2p 21. b – 2(b – 2) 22. –14y + 12(x + y) – 12x 23. –5(c + d) – 4d + 5c – d 24. –6(y – 1) + 2y + 7 – y + 4 Simplify each expression 25. 16( a – b) + 4( a + b) 26. -2(2a + 7) +3a – 4 27. ½ (2a + 6) + 15a 27. 11(k + 8) + 2 28. 9(2r + 1) 29. (1 + b)5 30. 8(x - 12) - 3 31. 5(2p - 12) 32. -7(h + 8) + 2 33. -3(2w + 10) -1 34. –l0(6c + 9) 35. -3(11 - q) 35. 9a + 2(a +4) 36. 8p + 14p 37. 9r – 5 r 38. 9a + a 39. 6c + 2c + 8c 40. 12y – y + 6y 41. m + 5m + 8 42. 10b + 4 – b + 1 43. 12a + 3 + 16 – 4a 44. 7h + h – 4h + 1 – 2h 45. 13c – 6d + c – d 46. 4x – 9 + 3x + 6 – 7x + 3 47. 6(r - 20) +4r 48. 3(2x + 10) + 7 49. 8 + 2(4r -2) 50. 17a + 3(6a -7) 51. -9(a-4) + b 52 3(a + 4) + 5a