2-3 Solving Multi-Step Equations

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2-3 Solving Multi-Step Equations

• Objective To solve multi-step equations in one
  variable

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Warm Up
You are buying movie tickets online for a group
of your friends. You have to enter the number of
tickets you want on the screen shown. You are
using a debit card to pay for the tickets and
have a total of 45 to spend. How many tickets
can you buy? Explain your answer.
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Solving Multi-Step Equations

• Combine like terms first (IF) they are on the
  same side of the equation
• Then solve it using reverse PEMDAS operation
  (SADMEP)

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Ex 1 Solve for m.
55??-232??
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Ex 2 Solve for m
11??-8-6??22
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Ex 3 Solve for y
-2??55??14
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Ex 4 Word Problem
Martha takes her niece and nephew to a concert.
She buys T-shirts and bumper stickers for them.
The bumper stickers cost 1 each. Marthas niece
wants 1 shirt and 4 bumper stickers, and her
nephew wants 2 shirts but no bumper stickers. If
Marthas total is 67, what is the cost of one
shirt? Relate Define Write Equation Check
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Ex 5 Word Problem
Noah and Kate are shopping for new guitar strings
in a music store. Noah buys 2 packs of strings.
Kate buys 2 packs of strings and a music book.
The book costs 16. Their total cost is 72.
How much is one pack of strings? Relate Define W
rite Equation Check
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Distributive Property
Multiplying a term to everything inside a
parenthesis
Ex 6 Solve for x
-8 2??-1 36
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Ex 7 Solve for x
183(2??-6)
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Ex 8 Solve for x
3?? 4 - ?? 3 10
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Ex 9 Solve for b
2?? 5 3?? 4 3
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Ex 10 Solve for m
1 9 5 6 - ?? 3
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Classwork

• 2-3 Page 98 s 11- 43 odd

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Homework

• 2-3 Page 98 s 10-44 even

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Classwork Answers2-3 P. 98 s 11-43 odd
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Homework Answers2-3 P. 98 s 10-44 even

• 10) 4 28) 2
• 12) 7 30) -4
• 14) 10 32) -2
• 16) 4 34) 1
• 18) 13 36) 3/8
• 20) 167t 19t 16 1132 38) -2 2/3
• 6 tickets 40) 9
• 22) 3 42) 6
• 24) 2 44) 28
• 26) -3.25 or -3¼ or