Warm ups - simplify
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Warm ups - simplify
Math Binder
1. Current Notes
2. Old Notes
3. Homework
4. Review Sheets
5. Quizzes/Tests
3-3 Solving Multistep Equations
Objective: To solve equations using add., subt.,
mult., and division.
Examples 1 – 3 (watch & listen)
5n + 6 = -4
-6 -6
5n = -10
5 5
n = -2
17 = 7y + 87 9 65
y
-9 -9
(5) (5)35
y
15y
Examples 4 – 6 (do with me)
0.6 1.5 1.8n 4 83
x
Example 7 – 9 (with a partner)
16
3
d 54 3 30x x 3 1 8y
TOO (Try on your own)
5 94
p 6 31
5
m
Solve.
3( 1) 5 3 2x x 5 2( 3) 7 1x x
Recap with a partner…
1) Explain to your partner how to solve a multi-step equation.
2) Explain how to solve the following equation:
38 11
2a
Homework
Pg. 160 # 17 – 33 odd
Check your answers in the back of the book.
Math Lab
Review today’s lesson Homework Please finish worksheets from last week:
Why did the ant run across the cracker box? What did the Spanish Farmer say to his chicken?
solve two-step equations.
ObjectiveThe student will be able to:
Designed by Skip Tyler, Varina High School
To solve two-step equations, undo the operations by working backwards.
Example:
Ask yourself,
1. What is the first thing we are doing to x?
2. What is the second thing?
Recall the order of operations as you
answer these questions.
• Dividing by 2
• Subtracting 3
3 72
x
To undo these steps, do the opposite operations in opposite order.
1) Solve 2x - 1 = -3
+ 1 + 1
2x = -2
2 2
x = -1
2(-1) - 1 = -3
-2 – 1 = -3
1. Draw “the river”2. Add 1 to both
sides3. Simplify4. Divide both sides
by 25. Simplify6. Check your
answer
+ 4 + 4
3 · · 3
x = 36
12 – 4 = 8
123
x
2) Solve 4 83
x
1. Draw “the river”2. Add 4 to both
sides3. Simplify4. Clear the fraction
-Multiply both sides by 3
5. Simplify6. Check your
answer
364 8
3
Try these on your own...
The answers...