How do you solve Algebra puzzles / riddles / word problems using 2 variables?
If one number is four less than three times another number and their sum is 28, what are the two numbers?
How do you solve the system of equations x = 3y - 4 and x + y = 28?
How do you set up and solve a system of equations from a word problem?
If the sum of 2 numbers is 85 and their difference is 9, what are the two numbers?
How do you solve the system x + y = 85 and x - y = 9?
Staff Review
Currently 4.0/5 Stars.
This lesson goes through some more complicated word problems in which you will learn to use two variables to solve a word problem / math puzzle. This method of using two variables to set up and solve a word problem is very useful in future math classes.