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Simplifying x2 + 2x + -15 = x2 + -5x + -6 Reorder the terms: -15 + 2x + x2 = x2 + -5x + -6 Reorder the terms: -15 + 2x + x2 = -6 + -5x + x2 Add '-1x2' to each side of the equation. -15 + 2x + x2 + -1x2 = -6 + -5x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -15 + 2x + 0 = -6 + -5x + x2 + -1x2 -15 + 2x = -6 + -5x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -15 + 2x = -6 + -5x + 0 -15 + 2x = -6 + -5x Solving -15 + 2x = -6 + -5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5x' to each side of the equation. -15 + 2x + 5x = -6 + -5x + 5x Combine like terms: 2x + 5x = 7x -15 + 7x = -6 + -5x + 5x Combine like terms: -5x + 5x = 0 -15 + 7x = -6 + 0 -15 + 7x = -6 Add '15' to each side of the equation. -15 + 15 + 7x = -6 + 15 Combine like terms: -15 + 15 = 0 0 + 7x = -6 + 15 7x = -6 + 15 Combine like terms: -6 + 15 = 9 7x = 9 Divide each side by '7'. x = 1.285714286 Simplifying x = 1.285714286
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