Answer:
B = -2
Explanation:
To solve the equation -9+7b=8b-7, you want to isolate the variable (b) on one side of the equation. Here are the steps to do that:
1. Start by simplifying both sides of the equation. Add 9 to both sides to eliminate the -9 on the left side:
-9 + 7b + 9 = 8b - 7 + 9
Simplifying this, we get:
7b = 8b + 2
2. Now, we want to isolate the variable (b) on one side of the equation. We can do this by subtracting 8b from both sides:
7b - 8b = 8b + 2 - 8b
Simplifying this, we get:
-b = 2
3. To solve for b, we need to isolate it by itself. We can do this by multiplying both sides by -1:
-b(-1) = 2(-1)
Simplifying this, we get:
b = -2
So the solution to the equation -9+7b=8b-7 is b = -2.