Simplifying:
3b + -9 + -8b = 11
Reorder the terms:
-9 + 3b + -8b = 11
Combine like terms: 3b + -8b = -5b
-9 + -5b = 11
Solving
-9 + -5b = 11
Solving for variable 'b'.
Move all terms containing b to the left, all other terms to the right.
Add '9' to each side of the equation.
-9 + 9 + -5b = 11 + 9
Combine like terms: -9 + 9 = 0
0 + -5b = 11 + 9
-5b = 11 + 9
Combine like terms: 11 + 9 = 20
-5b = 20
Divide each side by '-5'.
b = -4
Simplifying
Answer: b = -4