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Simplifying x2 + -18x + 81 = x2 + 15x + 50 Reorder the terms: 81 + -18x + x2 = x2 + 15x + 50 Reorder the terms: 81 + -18x + x2 = 50 + 15x + x2 Add '-1x2' to each side of the equation. 81 + -18x + x2 + -1x2 = 50 + 15x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 81 + -18x + 0 = 50 + 15x + x2 + -1x2 81 + -18x = 50 + 15x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 81 + -18x = 50 + 15x + 0 81 + -18x = 50 + 15x Solving 81 + -18x = 50 + 15x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15x' to each side of the equation. 81 + -18x + -15x = 50 + 15x + -15x Combine like terms: -18x + -15x = -33x 81 + -33x = 50 + 15x + -15x Combine like terms: 15x + -15x = 0 81 + -33x = 50 + 0 81 + -33x = 50 Add '-81' to each side of the equation. 81 + -81 + -33x = 50 + -81 Combine like terms: 81 + -81 = 0 0 + -33x = 50 + -81 -33x = 50 + -81 Combine like terms: 50 + -81 = -31 -33x = -31 Divide each side by '-33'. x = 0.9393939394 Simplifying x = 0.9393939394
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