-13=2b-b-10

combine like terms to simplify the problem.

-13=b-10

add 10 to both sides and that should solve the problem

-13=2b-b-10

1st step. (2b-b) = -13=b-10

2nd step- Make sure the variable (b) is on one side. We must add 10 to each side to make sure that variable (b) stands alone.

-13 = b - 10
+10 = b + 10
-----------
-3 = b

To solve the equation -13 = 2b - b - 10, we need to combine like terms and isolate the variable b on one side of the equation. Here's how to do it step by step:

1. Start by combining the like terms on the right side of the equation. The terms 2b and -b can be simplified to b. So, the equation becomes:
-13 = b - 10.

2. Next, isolate the variable b by getting rid of the constant term (-10) on the right side. We can achieve this by adding 10 to both sides of the equation:
-13 + 10 = b - 10 + 10.
Simplifying this equation gives:
-3 = b.

Therefore, the value of b that satisfies the equation -13 = 2b - b - 10 is b = -3.