Addition and subtraction equations - lesson for pre-algebra / 7th grade math
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Addition and subtraction equations - lesson for pre-algebra / 7th grade math
I teach how to solve simple linear equations where x only appears once, and can be solved by either adding the same number to both sides of the equation, or subtracting the same number from both sides of the equation. (The numbers may be negative.) So essentially, these are one-step equations, except sometimes we need to simplify something, or ...
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