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Simplifying 4[80 + b] + -12ifb = 20 [80 * 4 + b * 4] + -12ifb = 20 [320 + 4b] + -12ifb = 20 Solving 320 + 4b + -12bfi = 20 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-320' to each side of the equation. 320 + 4b + -320 + -12bfi = 20 + -320 Reorder the terms: 320 + -320 + 4b + -12bfi = 20 + -320 Combine like terms: 320 + -320 = 0 0 + 4b + -12bfi = 20 + -320 4b + -12bfi = 20 + -320 Combine like terms: 20 + -320 = -300 4b + -12bfi = -300 Reorder the terms: 300 + 4b + -12bfi = -300 + 300 Combine like terms: -300 + 300 = 0 300 + 4b + -12bfi = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(75 + b + -3bfi) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(75 + b + -3bfi)' equal to zero and attempt to solve: Simplifying 75 + b + -3bfi = 0 Solving 75 + b + -3bfi = 0 Move all terms containing b to the left, all other terms to the right. Add '-75' to each side of the equation. 75 + b + -75 + -3bfi = 0 + -75 Reorder the terms: 75 + -75 + b + -3bfi = 0 + -75 Combine like terms: 75 + -75 = 0 0 + b + -3bfi = 0 + -75 b + -3bfi = 0 + -75 Combine like terms: 0 + -75 = -75 b + -3bfi = -75 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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