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Simplifying 84x2 + -28xy + 20x = 0 Reorder the terms: 20x + -28xy + 84x2 = 0 Solving 20x + -28xy + 84x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '4x'. 4x(5 + -7y + 21x) = 0 Ignore the factor 4.Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(5 + -7y + 21x)' equal to zero and attempt to solve: Simplifying 5 + -7y + 21x = 0 Reorder the terms: 5 + 21x + -7y = 0 Solving 5 + 21x + -7y = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + 21x + -5 + -7y = 0 + -5 Reorder the terms: 5 + -5 + 21x + -7y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 21x + -7y = 0 + -5 21x + -7y = 0 + -5 Combine like terms: 0 + -5 = -5 21x + -7y = -5 Add '7y' to each side of the equation. 21x + -7y + 7y = -5 + 7y Combine like terms: -7y + 7y = 0 21x + 0 = -5 + 7y 21x = -5 + 7y Divide each side by '21'. x = -0.2380952381 + 0.3333333333y Simplifying x = -0.2380952381 + 0.3333333333ySolution
x = {0, -0.2380952381 + 0.3333333333y}
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