The first operations you will need to know when learning to use algebra to solve for an unknown variable "x" will be using addition and subtraction. You can check you work by checking the balance of the equation when you are done.
In this video, I advance beyond an introduction to algebra and show you how to solve for an "x" value using addition or subtraction, then checking your value for "x" by balancing an equation. If you are a teacher or student looking for online resources to help you understand other things you're having trouble with, go to my website: sites.google.com
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