Question

2a+9b-2a-b

Answer 1

De javu. Welcome to OpenStudy!

Answer 2

Do you know how to group the like terms and operate on them?

Answer 3

hello. I am stumped. I do however I keep getting different answers

Answer 4

Okay. So, you may group this as \(2a - 2a + 9b - b\). Do you agree?

Answer 5

yes..

Answer 6

What is 2a - 2a?

Answer 7

one second, i see where I went wrong.

Answer 8

correction.. it's not "grouping" it's rearranging ;)

Answer 9

answer is 8b.... 2a-2a+9b-b=8b

Answer 10

in combining like terms, (like terms are terms which differ on their numerical coefficients, meaning their literal factor are the same), that is for this problem 2a and - 2a has a literal factor as "a".

Answer 11

\[\Huge{\color{green}{2a+9b-2a-b=\color{blue}{8b}}}\]