mrs saadiyah n khan
the answer is 7b over 9b because the rule is numbers now letters later
Since 3b is a factor of 9b, it is automatically the GCF.
9
3A + 9B = 3(A + 3B)
2a + 3 - 9b - a - 7 Bring like terms together: = 2a - a - 9b + 3 - 7 Combine like terms: = a - 9b - 4
9b + 6 - 8 = -36 9b = -38 b = 4.2222222(repeating)
The simplified expression is -9a -9b.
If you mean: (3b+7)^2 then it is 9b^2+42b+49
(12a+9b)(12a-9b)
You would factor 3a + 9b as: 3(a+3b)
9B - 1986 TV is rated/received certificates of: Canada:PG
What I would do is change the problem up. Instead of b-9b I would make it -(9b-b). It is still the same problem; you will multiply the number inside the parenthesis be -1. So start with 9b-b. That would equal 8b. So it would change from -(9b-b) to -(8b) so you multiply 8b by negative 1 (-1) to get the answer -8b. -8b is your answer. So b - 9b = -8b