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Simplifying (x + -7) * 2 + (y + 7) * 2 = 9 Reorder the terms: (-7 + x) * 2 + (y + 7) * 2 = 9 Reorder the terms for easier multiplication: 2(-7 + x) + (y + 7) * 2 = 9 (-7 * 2 + x * 2) + (y + 7) * 2 = 9 (-14 + 2x) + (y + 7) * 2 = 9 Reorder the terms: -14 + 2x + (7 + y) * 2 = 9 Reorder the terms for easier multiplication: -14 + 2x + 2(7 + y) = 9 -14 + 2x + (7 * 2 + y * 2) = 9 -14 + 2x + (14 + 2y) = 9 Reorder the terms: -14 + 14 + 2x + 2y = 9 Combine like terms: -14 + 14 = 0 0 + 2x + 2y = 9 2x + 2y = 9 Solving 2x + 2y = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2y' to each side of the equation. 2x + 2y + -2y = 9 + -2y Combine like terms: 2y + -2y = 0 2x + 0 = 9 + -2y 2x = 9 + -2y Divide each side by '2'. x = 4.5 + -1y Simplifying x = 4.5 + -1y
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