Solving Word Problems with Systems of Equations Set Up pt 2
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Lesson Summary:
In this lesson, students will learn how to set up systems of equations to solve word problems. The video emphasizes how to define two variables and write two equations to comprise a system, with a focus on how to check the answer. Examples are given for word problems involving numbers and stamps that require the use of a chart to organize the information. Students are encouraged to pause the video and solve the system using either the substitution or addition method, with the steps on solving the system covered in other videos.
Lesson Description:
Setting up systems of equations to solve word problems.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you solve a word problem using systems of equations?
- How do you set up a system of equations from a word problem?
- How do you check your answer to a system of equations word problem?
- If one number is 4 more than twice the second number and their total is 25, what are the numbers?
- If x = 2y + 4 and x + y = 25, what are x and y?
- If Sarah and Keith purchased 40 stamps as a mixture of 37 cent and 23 cent stamps, how many of each type of stamp did they buy if they spent $14.10?
- How do you solve the system of equations 23x + 37y = 1410 and x + y = 40?
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Staff Review
A couple of more example word problems are shown and a system of equations is written to find the answer to the problem. These are very common problems in Algebra, and students sometimes have difficulty writing the equations from words. This is a great tutorial for learning this concept.
