Answer:
b = 1
Explanation:
Given
8 = b - 1 + 8b, that is
8 = 9b - 1 ( add 1 to both sides )
9 = 9b ( divide both sides by 9 )
1 = b
8 = b - 1 + 8b
combine like terms
8 = 9b - 1
add 1 to both sides of the equation
8 + 1 = 9b - 1 + 1
8 + 1 = 9b
9 = 9b
divide both sides of the equation by 9
9/9 = 9b/9
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