Warm%20Up

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Warm Up
Problem of the Day
Lesson Presentation
Lesson Quizzes
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Warm Up Solve. 1. 3x 102 2. 15 3. z
100 21 4. 1.1 5w 98.6
x 34
y 225
z 121
w 19.5
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Learn to solve multi-step equations.
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Additional Example 1A Solving Equations That
Contain Like Terms
Solve. 8x 6 3x 2 37
11x 4 37 Combine like terms.
4 4 Subtract 4 from both sides.
11x 33
Divide both sides by 11.
x 3
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Additional Example 1A Continued
Check
8x 6 3x 2 37
Substitute 3 for x.
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Additional Example 1B Solving Equations That
Contain Like Terms
Solve. 4(x 6) 7 11
4(x 6) 7 11 Distributive Property
4(x) 4(6) 7 11
Simplify by multiplying 4(x) 4x and 4(6) 24.
4x 24 7 11
4x 17 11
Simplify by adding 24 7 17.
17 17 Add 17 to both sides.
4x 28
Divide both sides by 4.
x 7
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Check It Out Example 1
Solve. 9x 5 4x 2 42
13x 3 42 Combine like terms.
3 3 Subtract 3 from both sides.
13x 39
Divide both sides by 13.
x 3
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Check It Out Example 1 Continued
Check
9x 5 4x 2 42
Substitute 3 for x.
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If an equation contains fractions, it may help to
multiply both sides of the equation by the least
common denominator (LCD) of the fractions. This
step results in an equation without fractions,
which may be easier to solve.
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Additional Example 2 Solving Equations That
Contain Fractions
Solve.
The LCD is 18.
Multiply both sides by 18.
Distributive Property.
14x 9x 34 12
23x 34 12 Combine like terms.
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Additional Example 2 Continued
23x 34 12 Combine like terms.
34 34 Add 34 to both sides.
23x 46
x 2
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Additional Example 2 Continued
Check

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Lesson Quizzes
Standard Lesson Quiz
Lesson Quiz for Student Response Systems
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Lesson Quiz
Solve. 1. 6x 3x x 9 33 2. 8(x 2) 5
29 3. 5. Linda is paid double her
normal hourly rate for each hour she works over
40 hours in a week. Last week she worked 52
hours and earned 544. What is her hourly rate?
x 3
x 1
x 28
4.
8.50
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Lesson Quiz for Student Response Systems
1. Solve 4p 13 11p 88 A. p 5 B. p 7 C.
p 75 D. p 91
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Lesson Quiz for Student Response Systems
2. Solve 4(x 3) 5 109 A. x 4 B. x
23 C. x 26 D. x 101
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Lesson Quiz for Student Response Systems
3. Solve . A. x 5 B. x
6 C. x 21 D. x 101