Valuation in algebra is all about figuring out the worth or value of something using numbers and equations. Let's say you have five apples and one friend wants to buy two apples. You can use algebra to figure out how many apples you have left after your friend makes their purchase.
We can represent the number of apples you have with a variable, let's call it "a". In this case, we know that "a" is equal to 5 (because you have 5 apples). Now we want to figure out how many apples you have left after your friend buys 2.
To do this, we can write an equation:
a - 2 = ?
This equation tells us that we're subtracting 2 from the value of "a" and trying to find what the new value would be. To solve this equation, we just need to subtract 2 from 5:
a - 2 = 5 - 2 = 3
So your friend bought two apples, and you have 3 apples left.
In essence, valuation is about using equations or formulas to figure out the value of something based on other known values or variables.