We subtract mixed numbers in a similar way. Procedure Subtracting Mixed Numbers To subtract mixed numbers, subtract the whole-number parts and subtract the fractional parts. Write the answer in lowest terms. Can you write these as one procedure? Add or subtract. a) 2 1 5 7 3 10 b) 9 3 4 5 1 6 Solution a) Because we will add the whole-number parts and add the fractional parts, begin by writing 1 5 and 3 10 as equivalent fractions with their least common denominator. The LCD of 1 5 and 3 10 is 10. 1 5 2 2 2 10 3 10 already has the LCD. 2 1 5 7 3 10 2 2 10 7 3 10 Write the fractions with the LCD. Add whole-number parts, and add fractions. Write 5 10 in lowest terms. 9 5 10 9 1 2 b) Begin by writing 3 4 and 1 6 as equivalent fractions with their LCD. The LCD of 3 4 and 1 6 is 12. 3 4 3 3 9 12 1 6 2 2 2 12 9 3 4 5 1 6 9 9 12 5 2 12 4 7 12 Is 4 7 12 in lowest terms? Yes. Write the fractions with the LCD. Subtract whole-number parts, and subtract fractions. EXAMPLE 1 Write out the examples as you are reading them. YOU TRY 1 Add or subtract. a) 6 3 7 7 2 5 b) 8 5 6 3 11 15 258 CHAPTER 4 Adding and Subtracting Fractions www.mhhe.com/messersmith
messersmith_power_basic_college_1e_ch4_7_10
To see the actual publication please follow the link above