SOLUTION: My question is to describe two methods for adding and subtracting linear expressions, but it doesn't make sense because I would have thought it would just be the same as any other

Question 1204375: My question is to describe two methods for adding and subtracting linear expressions, but it doesn't make sense because I would have thought it would just be the same as any other addition, and my book doesn't go over this and I'm really confused.
Found 2 solutions by MathLover1, josgarithmetic:
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

When an algebraic expression is a constant or a variable raised to the power of , this is a linear expression.
When adding or subtracting linear expressions, method or method could be used.
(1) Vertical method:
Align like terms vertically and add or subtract.
example:

+

------------------------

(2) Horizontal method:

Use properties of operations to group like terms and simplify.
example:

Answer by josgarithmetic(39614) (Show Source): You can put this solution on YOUR website!
You ask about basic arithmetic and not really much more.

Linear expressions and ;
You want TWO ways to add and to subtract them?

One should need to barest of instruction on this at most.
ADDING:

-
Do you know the name of the propertie allowing this?

You work with the subtraction on your own.
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