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Simplifying
49b2 + -4 = 21
Reorder the terms:
-4 + 49b2 = 21
Solving
-4 + 49b2 = 21
Solving for variable 'b'.
Move all terms containing b to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + 49b2 = 21 + 4
Combine like terms: -4 + 4 = 0
0 + 49b2 = 21 + 4
49b2 = 21 + 4
Combine like terms: 21 + 4 = 25
49b2 = 25
Divide each side by '49'.
b2 = 0.5102040816
Simplifying
b2 = 0.5102040816
Take the square root of each side:
b = {-0.714285714, 0.714285714}
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