5-minute check 1
DESCRIPTION
A B C D. Solve x – 3 = –6. Check your solution. x = -3. Solve y + 9 = 7. Check your solution. y = -2. Solve –13 = x – 9. Check your solution. x = -4. 5-Minute Check 1. Splash Screen. You have already solved equations using addition and subtraction. (Lesson 4–3). - PowerPoint PPT PresentationTRANSCRIPT
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Over Lesson 4–3
A. A
B. B
C. C
D. D
x = -3
Solve x – 3 = –6. Check your solution.
Solve y + 9 = 7. Check your solution.y = -2Solve –13 = x – 9. Check your solution.x = -4
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You have already solved equations using addition and subtraction. (Lesson 4–3)
• Solve equations by using the Division Property of Equality.
• Solve equations by using the Multiplication Property of Equality.
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Solve Equations by Dividing
Step 1: Write the equation.
Solve 7w = 161.
Step 2+3: Line through =; D.P.E.
Step 5: Give solution
Step 4: Do the math
Answer: The solution is 23.
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Solve Equations by Dividing
Step 1: Write the equation.
Solve 7x = –56. Check your solution and graph it on a number line.
Step 2+3: Line through =; D.P.E.
Step 4: Do the math.
Step 5: Give solution
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Solve Equations by Dividing
To check your solution, replace x with –8 in the original equation.
Answer: The solution is –8.
The sentence is true.
Check Write the equation.
Replace x with –8.?
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A. A
B. B
C. C
D. D
A. –132
B. –10
C. 10
D. 132
Solve 12p = 120.
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A. A
B. B
C. C
D. D
A. –48
B. –3
C. 3
D. 48
Solve 4x = –12. Check your solution.
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Solve an Equation by Dividing
HOBBIES Esteban spent $112 on boxes of baseball cards. He paid $14 per box. Write and solve an equation to find how many boxes of cards Esteban bought.
.
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Solve an Equation by Dividing
Step 1: Write the equation.
Step 2+3: Line through =; D.P.E.
Step 4: Do the math1𝑏=8Step 5: Give solution
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Solve an Equation by Dividing
Check 14b = 112 Write the equation.
To check your solution, replace b with 8 in the original equation.
?14(8) = 112 Replace b with 8.
112 = 112 The sentence is true.
Answer: Therefore, Esteban bought 8 boxes of cards.
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A. A
B. B
C. C
D. D
A. 3d = 27, 9 dozen
B. 27d = 3, 9 dozen
C. 9d = 27, 3 dozen
D. 27d = 9, 3 dozen
DOUGHNUTS Eliza spent $27 on doughnuts. She paid $3 per dozen. Write and solve an equation to find how many dozens of doughnuts Eliza bought.
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Solve Equations by Multiplying
Step 1: Write the equation.
Solve . Check your solution.
Step 5: Give solution
Step 2+3: Line through =; M.P.E.
1y = 60 Step 4: Do the math
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Solve Equations by Multiplying
Check
Answer: The solution is 60.
Write the equation.
The sentence is true.
Replace y with 60.?
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A. A
B. B
C. C
D. D
Solve Check your solution.
A. –36
B. –5
C.
D. 36
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Solve Equations by Multiplying by the Reciprocal
Step 1: Write the equation.
Step 5: Give solution
1x = 12
Step 2+3: Line through =; Use the Reciprocal
Step 4: Do the math
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Solve Equations by Multiplying by the Reciprocal
Answer: The solution is 12.
Check Write the equation.
The sentence is true.
Replace x with 12.?