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Simplifying 3b(2b + 5) = 5b(7b + -21) Reorder the terms: 3b(5 + 2b) = 5b(7b + -21) (5 * 3b + 2b * 3b) = 5b(7b + -21) (15b + 6b2) = 5b(7b + -21) Reorder the terms: 15b + 6b2 = 5b(-21 + 7b) 15b + 6b2 = (-21 * 5b + 7b * 5b) 15b + 6b2 = (-105b + 35b2) Solving 15b + 6b2 = -105b + 35b2 Solving for variable 'b'. Reorder the terms: 15b + 105b + 6b2 + -35b2 = -105b + 35b2 + 105b + -35b2 Combine like terms: 15b + 105b = 120b 120b + 6b2 + -35b2 = -105b + 35b2 + 105b + -35b2 Combine like terms: 6b2 + -35b2 = -29b2 120b + -29b2 = -105b + 35b2 + 105b + -35b2 Reorder the terms: 120b + -29b2 = -105b + 105b + 35b2 + -35b2 Combine like terms: -105b + 105b = 0 120b + -29b2 = 0 + 35b2 + -35b2 120b + -29b2 = 35b2 + -35b2 Combine like terms: 35b2 + -35b2 = 0 120b + -29b2 = 0 Factor out the Greatest Common Factor (GCF), 'b'. b(120 + -29b) = 0Subproblem 1
Set the factor 'b' equal to zero and attempt to solve: Simplifying b = 0 Solving b = 0 Move all terms containing b to the left, all other terms to the right. Simplifying b = 0Subproblem 2
Set the factor '(120 + -29b)' equal to zero and attempt to solve: Simplifying 120 + -29b = 0 Solving 120 + -29b = 0 Move all terms containing b to the left, all other terms to the right. Add '-120' to each side of the equation. 120 + -120 + -29b = 0 + -120 Combine like terms: 120 + -120 = 0 0 + -29b = 0 + -120 -29b = 0 + -120 Combine like terms: 0 + -120 = -120 -29b = -120 Divide each side by '-29'. b = 4.137931034 Simplifying b = 4.137931034Solution
b = {0, 4.137931034}
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