Cornell Notes
Topic/Objective:
Name:
Solving one and two-step equations
Class/Period:
Date: September 16, 2015
Essential Question: How do I solve one and two-step equations?
Questions:
What do I know, what do I
want to know, and what did
I learn about solving
equations?
Notes:
KWL
Know
Want
Learned
Vocabulary:
Vocabulary:
Algebraic expressions: an expression that contains at least one variable, a constant
and at least one operation
Ex: x + 5, n - 2
Equation: a mathematical sentence that shows that two expressions are equivalent
Ex: x + 3 = 8
Variable: a symbol used to represent a quantity that can change
Ex: “x”, “y”
Solution: the value of the variable that makes an equation true
Ex: x = 5, x + 3 =8
Constant: a fixed number and means “unchanging”
Ex: x + 3 = 8
constant
Summary:
Questions:
Notes:
How do I solve a one-step
equation?
ONE-STEP EQUATIONS
X – 4 = 10
+4 +4
X = 14
3X = -9
3X = -9
3
3
X = -3
How do I solve two-step
equations?
equation
inverse operation of the constant
simplify/solution
equation
inverse operation of the coefficient
simplify/ solution
TWO-STEP EQUATIONS
2X – 4 = 10
+4 +4
2X = 14
2 2
X=7
𝟏
X – 7 = -9
+7 +7
𝟏
X = -2
𝟑
𝟑
𝟏
3 (𝟑)X = -2
X = -6
equation
inverse operation of the constant
simplify
inverse operation of the coefficient
simplify/solution
equation
inverse operation of the constant
simplify
inverse operation of the coefficient
simplify/solution
Steps to remember:
1. Inverse operation of the constant
2. Simplify
3. Inverse operation of the coefficient
4. Simplify/solution
Summary: