3-4 Solving Equations Containing Decimals Do Now Solve. 1. x – 17 = 322. y + 11 = 41 3. = 184. 12x = 108 5. x – 9 = 20 x = 49y = 30 w = 90 x = 9 x = 29.

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Do Now Solve. 1. x – 17 = y + 11 = = x = x – 9 = 20 x = 49 y = 30 w 5 w = 90 x = 9 x = 29 Hwk: p29 odd, Test this Friday.

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3-4 Solving Equations Containing Decimals Do Now Solve. 1. x – 17 = 322. y + 11 = = x = x – 9 = 20 x = 49y = 30 w = 90 x = 9 x = 29 w 5

3-4 Solving Equations Containing Decimals Learn to solve one-step equations that contain decimals.

3-4 Solving Equations Containing Decimals You can solve an equation by performing the same operation on both sides of the equation to isolate the variable. Remember!

3-4 Solving Equations Containing Decimals Solve. Example A n – 2.75 = n = a = 42 –32.66 a = 9.34 x 4.8 = · · 4.8 x = = 3.6d = d 3.6

3-4 Solving Equations Containing Decimals Solve. You Try n – 1.46 = n = 6.16 a = 36 –27.51 a = 8.49 x 3.5 = · · 3.5 x = = 2.5d = d 2.5

3-4 Solving Equations Containing Decimals Extra Example A board-game box is 2.5 inches tall. A toy store has shelving measuring 15 inches vertically in which to store the boxes. How many boxes can be stacked in the space? 2.5b = b = 6 Six boxes can be stacked in the space.

3-4 Solving Equations Containing Decimals Extra Example A canned good is 4.5 inches tall. A grocery store has shelving measuring 18 inches vertically in which to store the cans. How many cans can be stacked in the space? 4.5c = c = 4 Four cans can be stacked in the space.

3-4 Solving Equations Containing Decimals Lesson Quiz Solve. 1. x – = c = – m =– The French Club is selling coupon books for $8.25 each. How many books must be sold to bring in $5,940? c = –8.2 x = x = x 9.3 = books m = –27.32

3-4 Solving Equations Containing Decimals 1. Solve. m = –15.45 A. m = –28 B. m = –29 C. m = –30 D. m = –31 Lesson Quiz for Student Response Systems

3-4 Solving Equations Containing Decimals 2. Solve. x – 16 = 18.7 A. x = –35.13 B. x = –2.27 C. x = 2.27 D. x = Lesson Quiz for Student Response Systems

3-4 Solving Equations Containing Decimals 3. Solve. 14.8a = – A. a = 7.3 B. a = 6.9 C. a = –6.9 D. a = –7.3 Lesson Quiz for Student Response Systems

3-4 Solving Equations Containing Decimals 4. Solve. — = 7.2 A. x = B. x = C. x = D. x = 64 Lesson Quiz for Student Response Systems x 8.6

3-4 Solving Equations Containing Decimals 5. A fashion show ticket costs $7.75 per person. How many fashion show tickets must be sold to generate $4,805? A. 600 tickets B. 620 tickets C. 640 tickets D. 660 tickets Lesson Quiz for Student Response Systems