Solving Two-Step Equations
Let's Review One-Step Equations:
WARM-UP ANSWER
Y - 5 = 2
+5 +5
Y = 7
Ogres and Two-Step Equations
Two-Step Equation
HINT: Start from the
OUTSIDE
layer
Example: 5X - 6 = 9
Layer 1:
Add 6 to both sides
Layer 2:
Divide both sides by 5
Warm-Up!
Y - 5 = 2
QUESTIONS?
Finish the phrase:
Ogres are like onions, and two-step equations, they all have . . .
LAYERS!
5X + 3 = 8
Example 1 :
Example 2 :
5X - 6 = 9
+6 +6
5X = 15
5 5
X = 3
-3 + 2W = 11
-10 = 6 + 4X
EXIT TICKET:
Name:
4Y - 9 = 15
Two-Step Equations
Definition:
An equation that needs
two steps
to solve
Fist to Five:
Fist: I'm completely lost!
One: I'm very confused.
Two: I'm still a little confused.
Three: I kind of understand!
Four: I can do this!
Five: I can teach others!
Outside Layer?
5X - 6 = 9
How do you get to the center of an onion?
How do you isolate the variable?
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Solving Two-Step Equations
15 Minute Mini Lesson
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