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Simplifying
81b2 + -1 = 63
Reorder the terms:
-1 + 81b2 = 63
Solving
-1 + 81b2 = 63
Solving for variable 'b'.
Move all terms containing b to the left, all other terms to the right.
Add '1' to each side of the equation.
-1 + 1 + 81b2 = 63 + 1
Combine like terms: -1 + 1 = 0
0 + 81b2 = 63 + 1
81b2 = 63 + 1
Combine like terms: 63 + 1 = 64
81b2 = 64
Divide each side by '81'.
b2 = 0.7901234568
Simplifying
b2 = 0.7901234568
Take the square root of each side:
b = {-0.888888889, 0.888888889}
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