Question

Simplify: (4b – 8) – (2b – 9)

Answer 1

explain plz

Answer 2

Remove the parentheses first, being careful to distribute the negative to both parts of the second term:
\[4b - 8 - 2b + 9\] See that the 9 became positive because a negative times a negative makes a positive.

From here, we combine like terms, that is, we find the terms that have something in common.

4b and -2b both have a b in common, so we can combine those. Likewise, -8 and 9 have no variable, so they are like terms.

We combine 4b and -2b exactly like how looks like it should be combined:\[4b-2b = 2b\]
And we do the same with -8 and 9:\[-8+9 = 1\]
So we're left with a positive 4b and a positive 1. These are unlike terms, so we're done!

Your final answer should show one positive term being added to another positive term:
\[2b+1\]

Answer 3

thxx so much

Answer 4

No problem :)