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Simplifying -21x + -3n2 + 12 = 0 Reorder the terms: 12 + -3n2 + -21x = 0 Solving 12 + -3n2 + -21x = 0 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -3n2 + -12 + -21x = 0 + -12 Reorder the terms: 12 + -12 + -3n2 + -21x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -3n2 + -21x = 0 + -12 -3n2 + -21x = 0 + -12 Combine like terms: 0 + -12 = -12 -3n2 + -21x = -12 Add '21x' to each side of the equation. -3n2 + -21x + 21x = -12 + 21x Combine like terms: -21x + 21x = 0 -3n2 + 0 = -12 + 21x -3n2 = -12 + 21x Divide each side by '-3'. n2 = 4 + -7x Simplifying n2 = 4 + -7x Reorder the terms: -4 + n2 + 7x = 4 + -7x + -4 + 7x Reorder the terms: -4 + n2 + 7x = 4 + -4 + -7x + 7x Combine like terms: 4 + -4 = 0 -4 + n2 + 7x = 0 + -7x + 7x -4 + n2 + 7x = -7x + 7x Combine like terms: -7x + 7x = 0 -4 + n2 + 7x = 0 The solution to this equation could not be determined.
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