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Simplifying 7x2 + 3x + -1k = 0 Reorder the terms: -1k + 3x + 7x2 = 0 Solving -1k + 3x + 7x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-3x' to each side of the equation. -1k + 3x + -3x + 7x2 = 0 + -3x Combine like terms: 3x + -3x = 0 -1k + 0 + 7x2 = 0 + -3x -1k + 7x2 = 0 + -3x Remove the zero: -1k + 7x2 = -3x Add '-7x2' to each side of the equation. -1k + 7x2 + -7x2 = -3x + -7x2 Combine like terms: 7x2 + -7x2 = 0 -1k + 0 = -3x + -7x2 -1k = -3x + -7x2 Divide each side by '-1'. k = 3x + 7x2 Simplifying k = 3x + 7x2
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