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
If you mean: 7b+b+b then it is 9b simplified
10b
9b-13b= -4b -4b = 40 Divide both sides by -4 b = -10
b= 10
If you mean: (3b+7)^2 then it is 9b^2+42b+49
If you mean: 7b+b+b then it is 9b simplified
The simplified expression is -9a -9b.
When simplified it is: 2a+8b+4
9b + 6 - 8 = -36 9b = -38 b = 4.2222222(repeating)
9b
10b
8b^2 -9b +1 8b^2 -8b -b +1 8b(b-1) - 1(b-1) (8b-1)(b-1)
The LCM of 9b and 12 b is 36b. LCM is Least Common Multiple.
9b-13b= -4b -4b = 40 Divide both sides by -4 b = -10
b= 10
If you mean: (3b+7)^2 then it is 9b^2+42b+49
It is not an equation but an algebraic expression that can be simplified to: 12b-5a