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Simplifying x2 + 8x = x2 + 13x Reorder the terms: 8x + x2 = x2 + 13x Reorder the terms: 8x + x2 = 13x + x2 Add '-1x2' to each side of the equation. 8x + x2 + -1x2 = 13x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 8x + 0 = 13x + x2 + -1x2 8x = 13x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 8x = 13x + 0 8x = 13x Solving 8x = 13x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13x' to each side of the equation. 8x + -13x = 13x + -13x Combine like terms: 8x + -13x = -5x -5x = 13x + -13x Combine like terms: 13x + -13x = 0 -5x = 0 Divide each side by '-5'. x = 0 Simplifying x = 0
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