Assignment: 02-Two Step Equations
Solving two step equations is the exact same concept as one step equations. For a review on one step equations, click here.
Here is an example of a two step equation:
2x + 10 = 34
As I said, the goal is the same, to get the variable alone. The way to do that is the exact same, by using the opposite operation. You always want to start with the addition or subtraction, the numbers that are not directly connected with the variable. In this case the ‘+10′ is what we will get rid of first. To get rid of add 10, we subtract 10:
At that point, you have a one step equation. The opposite of multiply 2 is to divide 2.
Rather than taking the whole thing on at once, another way to think about it is through two one step equations. Let’s take the equation 4x – 6 = 22. We are going to disguise the first variable and coefficient. For fun, we’ll use a flower and say that the flower is equal to 4x.
We now have a one step equation to solve. Using the opposite operation, we get rid of the ‘-6′ by adding 6.
From there we substitute the 4x back in for the flower, and once again, using the opposite operation, we can divide by 4 to get the solution.
