b-9b???

how are you supposed to simplify if there isnt a nmber before the b????

Yes. You just need to combine like terms.

do u do 1b-9b? i think that's how im supposed to do it

You need to combine them. What is 1b - 9b?

-8b

Right! :-)

When simplifying algebraic expressions, it's important to follow certain rules and conventions. In this case, the absence of a number in front of the variable can indicate that there's an understood coefficient of 1.

Let's analyze the given expression: b-9b???

To simplify this expression, we need to combine like terms. In this case, the like terms are the variables with the same exponent (in this case, 'b').

To combine 'b' terms, we can factor out the common factor 'b' and then simplify. Here's how you can do it step by step:

1. Group the 'b' terms together: b - 9b
2. Notice that the variable 'b' is common to both terms. We can factor it out.
b(1 - 9)

Now, let's simplify further:

3. In the parentheses, we can simplify the expression: 1 - 9 = -8.

Therefore, the simplified expression is:
b(-8)

In summary, if there isn't a number in front of the variable, we consider it as an understood coefficient of 1. By factoring out the common factor 'b', we obtained the simplified expression 'b(-8)'.