Download e-book for kindle: Algebra DeMYSTiFieD (2nd Edition) by Rhonda Huettenmueller

By Rhonda Huettenmueller

ISBN-10: 0071743626

ISBN-13: 9780071743624

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Additional resources for Algebra DeMYSTiFieD (2nd Edition)

Example text

Write each fraction so that its denominator is the LCD and then add/ subtract the numerators. • Perform arithmetic with fractions and whole numbers. Write the whole num- ber in fraction form (its denominator is 1) and then follow one of the procedures outlined above. 37 DeMYSTiFieD / Algebra DeMYSTiFieD / Gibilisco / 000-0 / Chapter 1 38 a lg e b r a D e mys tifie d • Simplify compound fractions. Rewrite the compound fraction as a division problem and then as a multiplication problem. After this is done, find the product.

178 = (1⋅ 8) + 7 8 + 7 15 = = 8 8 8 2. 5 31 = (5 ⋅ 3) + 1 15 + 1 16 = = 3 3 3 3. 2 74 = (2 ⋅ 7) + 4 14 + 4 18 = = 7 7 7 4. 9 116 = (9 ⋅ 11) + 6 99 + 6 105 = = 11 11 11 5. 8 85 = (8 ⋅ 8) + 5 64 + 5 69 = = 8 8 8 Fractions and Division of Whole Numbers There is a close relationship between improper fractions and division of whole numbers. First let us review the parts of a division problem. quotient divisor dividend ) ... _______ remainder dividend remainder = quotient + divisor divisor 27 DeMYstiFieD / algebra DeMYstiFieD / Gibilisco / 000-0 / Chapter 1 28 a lG e b r a De mys tifieD In an improper fraction, the numerator is the dividend and the divisor is the denominator.

26 7 3 7 26 −21 5 ) 26 = 3 75 7 Mixed Number Arithmetic We can add (or subtract) two mixed numbers in one of two ways. We will compute 4 23 + 3 12 both ways. One strategy is to add the whole numbers and then to add the fractions.  4 23 + 3 12 =  4 +  2  2 1  4 3 1 7 1  +  3 +  = ( 4 + 3) +  +  = 7 +  +  = 7 + = 7 + 1 + = 8 16 3  2 6 6  3 2 6 6 The other strategy is to convert the mixed numbers in improper fractions before adding them. 4 23 + 3 12 = 14 7 28 21 49 + = + = = 8 16 3 2 6 6 6 PRACTICE Find the sum or difference.

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Algebra DeMYSTiFieD (2nd Edition) by Rhonda Huettenmueller


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