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Simplifying (-9 + -7b + 5) * 7ab = 0 Reorder the terms: (-9 + 5 + -7b) * 7ab = 0 Combine like terms: -9 + 5 = -4 (-4 + -7b) * 7ab = 0 Reorder the terms for easier multiplication: 7ab(-4 + -7b) = 0 (-4 * 7ab + -7b * 7ab) = 0 (-28ab + -49ab2) = 0 Solving -28ab + -49ab2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Factor out the Greatest Common Factor (GCF), '-7ab'. -7ab(4 + 7b) = 0 Ignore the factor -7.Subproblem 1
Set the factor 'ab' equal to zero and attempt to solve: Simplifying ab = 0 Solving ab = 0 Move all terms containing a to the left, all other terms to the right. Simplifying ab = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 2
Set the factor '(4 + 7b)' equal to zero and attempt to solve: Simplifying 4 + 7b = 0 Solving 4 + 7b = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 7b = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 7b = 0 + -4 7b = 0 + -4 Combine like terms: 0 + -4 = -4 7b = -4 Add '-7b' to each side of the equation. 7b + -7b = -4 + -7b Combine like terms: 7b + -7b = 0 0 = -4 + -7b Simplifying 0 = -4 + -7b 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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