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Solving Two-Step Equations

15 Minute Mini Lesson
by

Hollie Eiswert

on 30 July 2013

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Transcript of Solving Two-Step Equations

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?
Full transcript