By Margaret L. Lial, John Hornsby, Terry McGinnis

**Is there whatever extra appealing than an “A” in Algebra?** to not the Lial group! Marge Lial, John Hornsby, and Terry McGinnis write their textbooks and accompanying assets with one aim in brain: giving scholars and academics all of the instruments they should be successful.

With this revision of the Lial Developmental Algebra sequence, the group has additional subtle the presentation and workouts during the textual content. they give numerous intriguing new assets for college students and academics that might supply additional aid while wanted, whatever the studying atmosphere (traditional, lab-based, hybrid, online)—new learn talents actions within the textual content, an up to date and elevated Lial Video Library (available in MyMathLab), and a brand new accompanying Lial Video Library Workbook (available in MyMathLab)*.*

**Note: **You are buying a standalone product; MyMathLab doesn't come packaged with this content material. MyMathLab isn't really a self-paced expertise and will basically be bought while required by means of an teacher. if you want to purchase *both *the actual textual content and MyMathLab, look for:

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Simplify each answer if possible. 41. 5x + 8x = 42. 9y - 6y = (distributive property) 43. 519r2 = (associative property) 45. 5x + 9y = (distributive property) 44. - 4 + 112 + 82 = (associative property) 46. - 5 (commutative property) # 7 = (commutative property) 38 CHAPTER 1 Review of the Real Number System 47. 1 # 7 = 48. - 12x + 0 = (identity property) 1 1 49. - ty + ty = 4 4 (identity property) 50. - (inverse property) 51. 81- 4 + x2 = 9 8 a- b = 8 9 (inverse property) 52. 31x - y + z2 = (distributive property) 53.

A) 6 - 8 = 6 + 1- 82 = - 2 Change to addition. The additive inverse of 4 is - 4. (b) - 12 - 4 = - 12 + 1- 42 = - 16 (c) - 10 - 1- 72 = - 10 + 7 The additive inverse of - 7 is 7. 7 (e) 5 3 5 3 - a- b = + 6 8 6 8 To subtract, add the additive inverse (opposite). = 20 9 + 24 24 Write each fraction with the least common denominator, 24. = 29 24 Add numerators. Keep the same denominator. NOW TRY When working a problem that involves both addition and subtraction, add and subtract in order from left to right.

27 NOW TRY Using the Order of Operations = 4 4. 5 Multiplications and divisions are done in the order in which they appear from left to right. So we divide first here. Simplify. (b) NOW TRY ANSWERS Divide. Work inside the parentheses first. Divide inside the parentheses. Subtract inside the parentheses. Multiply. Add. NOW TRY 28 Review of the Real Number System CHAPTER 1 NOW TRY EXERCISE 6 Simplify. EXAMPLE 6 # Simplify. Using the Order of Operations 5 + 1- 2 32122 ͙36 - 4 - 2 2 - 8 # 3 + 13 32 6 # ͙9 - 9 = # Work separately above and below the fraction bar.