Two Variable Word Problems 2

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
8403 views | 3 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, we continue solving puzzles and riddles, otherwise known as word problems, using two variables. The instructor explains how to write two equations and decide whether to use the substitution or addition method. He walks through two example problems with clear explanations and shows how to check the answers to make sure they work. By the end of the lesson, students will have a better understanding of how to solve complex word problems using two variables.

Lesson Description:

Provides explanation of how to solve word problems using two variables.

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Questions answered by this video:
  • How do you solve Algebra puzzles / riddles / word problems using 2 variables?
  • If a first number plus twice a second number is 23, and twice the first number plus the second number is 31, what are the two numbers?
  • How do you solve the system of equations x + 2y = 23 and 2x + y = 31?
  • If the sum of two numbers is 16 and the first number plus 2 more than 3 times the second equals 18, what are the two numbers?
  • How do you solve and check x + y = 16 and x + (3y + 2) = 18?
  • Staff Review

    • Currently 4.0/5 Stars.
    This video goes through some more examples of word problems / riddles in Algebra using two variables and two equations to solve the problems. You will learn how to set up equations from the problem and solve the resulting system of equations using substitution or elimination and then check your answer. This is a very good tutorial on word problems in Algebra.
  • jordierocks94

    • Currently 5.0/5 Stars.
    Language puzzles and riddles really helped take some of the fear and befuddlement out of listening to what is for me a really great video learning experience! Thanks. BTW: Math education has improved 500% since I was a kid.
  • lucylulu

    • Currently 4.0/5 Stars.
    straight forward concise ...thanks