Answer
b=220

Steps Explained:
Solve for b
25b - 5500 = 0
Divide each side by 25
Group constants
Group our constants -5500 and 0.
add 5500 to both sides
25b - 5500 + 5500 = 0 + 5500
Cancel 5500 on the left side:
25b = 5500
Divide each side of the equation by 25
b = 220
Final Answer
b=220
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