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Simplifying 9x + 3xy + -21 = 0 Reorder the terms: -21 + 9x + 3xy = 0 Solving -21 + 9x + 3xy = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 9x + 21 + 3xy = 0 + 21 Reorder the terms: -21 + 21 + 9x + 3xy = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 9x + 3xy = 0 + 21 9x + 3xy = 0 + 21 Combine like terms: 0 + 21 = 21 9x + 3xy = 21 Reorder the terms: -21 + 9x + 3xy = 21 + -21 Combine like terms: 21 + -21 = 0 -21 + 9x + 3xy = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-7 + 3x + xy) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-7 + 3x + xy)' equal to zero and attempt to solve: Simplifying -7 + 3x + xy = 0 Solving -7 + 3x + xy = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 3x + 7 + xy = 0 + 7 Reorder the terms: -7 + 7 + 3x + xy = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 3x + xy = 0 + 7 3x + xy = 0 + 7 Combine like terms: 0 + 7 = 7 3x + xy = 7 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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