By by James Hamblin Smith

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Fraction you ate ϩ Fraction your friend ate ϭ Fraction of the pizza eaten 2 3 5 ϩ ϭ 8 8 8 2 3 ϩ , we added the numerators and kept the denominator the same. Notice 8 8 that these fractions have the same denominator. To add Procedure Adding and Subtracting Fractions Let a, b, and c be numbers such that c 0. a a b aϩb b aϪb and Ϫ ϭ ϩ ϭ c c c c c c To add or subtract fractions, the denominators must be the same. ) Then, add (or subtract) the numerators and keep the same denominator. EXAMPLE 8 Perform the operation and simplify.

00/ft2. 5 ft, and she can spend at most $900. 4 ft 52) 3 ft 8 ft 3 ft 3 ft 15 ft 32 CHAPTER 1 a) How much glass does she need? b) Can she afford the low-e glass for this window? 6Љ high. What is the volume of the cooler? indd Page 33 16/08/12 10:52 PM user-f498 /207/MH01613/mes06260_disk1of1/0073406260/mes06260_pagefiles IA— 63) The lazy Susan on a table in a Chinese restaurant has a 10-inch radius. ) a) What is the perimeter of the lazy Susan? b) What is its area? 64) Yessenia wants a custom-made area rug measuring 5 ft by 8 ft.

Objective 3: Multiply and Divide Fractions a) 3 2 , 14 7 c) 29 3 9 , , 30 4 20 b) 17 3 , 25 10 25) Add or subtract. Write the answer in lowest terms. 15) Multiply. Write the answer in lowest terms. a) 2 3 ؒ 7 5 b) 15 4 ؒ 26 9 a) 6 2 ϩ 11 11 b) 19 7 Ϫ 20 20 c) 1 14 ؒ 2 15 d) 42 22 ؒ 55 35 c) 4 2 9 ϩ ϩ 25 25 25 d) 2 1 ϩ 9 6 1 2 ؒ 8 7 e) 3 11 ϩ 5 30 f) 13 2 Ϫ 18 3 g) 4 5 ϩ 7 9 h) 5 1 Ϫ 6 4 i) 3 7 3 ϩ ϩ 10 20 4 j) 1 2 10 ϩ ϩ 6 9 27 e) 4 ؒ 1 8 f) 6 16) Multiply. Write the answer in lowest terms. 1 5 ؒ 6 9 b) c) 12 25 ؒ 25 36 d) e) 7 ؒ 10 15 5 5 f) 7 ؒ 1 7 9 a) 9 6 ؒ 20 7 30 21 ؒ 49 100 26) Add or subtract.

### A treatise on elementary algebra by by James Hamblin Smith

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