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Simplifying 21ab2 + -15ab = 0 Reorder the terms: -15ab + 21ab2 = 0 Solving -15ab + 21ab2 = 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), '3ab'. 3ab(-5 + 7b) = 0 Ignore the factor 3.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 '(-5 + 7b)' equal to zero and attempt to solve: Simplifying -5 + 7b = 0 Solving -5 + 7b = 0 Move all terms containing a to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + 7b = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 7b = 0 + 5 7b = 0 + 5 Combine like terms: 0 + 5 = 5 7b = 5 Add '-7b' to each side of the equation. 7b + -7b = 5 + -7b Combine like terms: 7b + -7b = 0 0 = 5 + -7b Simplifying 0 = 5 + -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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