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Simplifying x2 + -2X + -8 = 7 Reorder the terms: -8 + -2X + x2 = 7 Solving -8 + -2X + x2 = 7 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '8' to each side of the equation. -8 + -2X + 8 + x2 = 7 + 8 Reorder the terms: -8 + 8 + -2X + x2 = 7 + 8 Combine like terms: -8 + 8 = 0 0 + -2X + x2 = 7 + 8 -2X + x2 = 7 + 8 Combine like terms: 7 + 8 = 15 -2X + x2 = 15 Add '-1x2' to each side of the equation. -2X + x2 + -1x2 = 15 + -1x2 Combine like terms: x2 + -1x2 = 0 -2X + 0 = 15 + -1x2 -2X = 15 + -1x2 Divide each side by '-2'. X = -7.5 + 0.5x2 Simplifying X = -7.5 + 0.5x2
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