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Why we do the same thing to both sides
Takes a high-level, conceptual walk-through of what an equation represents and why we do the same thing to both sides of it.
The example of a scale where we try to achieve balance helps to explain why we do the same thing to both sides of an equation.
Equations are about relationships (no, not girlfriends and boyfriends!) between the two sides of the equation. Let's again use a scale example to help us understand.
This equation can be simplified through a single step to solve for the variable. Can you help?
To find the value of a variable, you sometimes have to get it on one side of the equation alone. To do that, you'll need to do something to BOTH sides of the equation. Watch. We'll explain why we do this.
Explore why we do the same things to both sides of an equation.
Let's get a conceptual understanding of why one needs to divide both sides of an equation to solve for a variable.