Solving Two-Step Equations
Presentation
•
Mathematics
•
University
•
Medium
Standards-aligned
Kylie Paluck
Used 31+ times
FREE Resource
5 Slides • 5 Questions
1
Solving Two-Step Equations
2
Learning Objective
I can solve two-step equations in one variable.
3
How can you solve a two step equation?
A two step equation, like the one shown below, involves two operations.
To solve a two step equation, work backward to undo operations. Reverse the order of operations. For example, to solve 2x+3=15, you can use subtraction first to undo the addition, and then use division to undo the multiplication.
4
How to get rid of a fraction?
Solving with two terms in the numerator, look at the example below.
What operation should you perform first?
Multiplication. When you multiply by the denominator of the frqaction in the equation, you get a on-step equation. So, multiplying first gets rid of the fraction.
5
Word problem.
The junior class is selling granola bars to raise money. They purchased 1250 granola bars and paid a delivery fee of $25. The total cost, including the delivery fee, was $800. What was teh cost of each granola bar?
6
Multiple Choice
50 = 28.1 + 0.15a
a= 150
a= 146
a= 6
a= 155
7
Multiple Choice
a= -2
a= -6
a= 3
a= 15
8
Multiple Choice
33 = 4a - 7
a=-10
a=10
a=4.5
9
Multiple Choice
What is the first step in solving the following equation?
3x - 5 = 20
multiply both sides by 5
add 5 to both sides
divide both sides by 5
subtract both sides by 5
10
Multiple Choice
The goal of solving two-step equations is to:
francine
Find the coefficient
Find the value of the variable
Solving Two-Step Equations
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