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Simplifying (x + -1) * 2 + (y + 6) = 81 Reorder the terms: (-1 + x) * 2 + (y + 6) = 81 Reorder the terms for easier multiplication: 2(-1 + x) + (y + 6) = 81 (-1 * 2 + x * 2) + (y + 6) = 81 (-2 + 2x) + (y + 6) = 81 Reorder the terms: -2 + 2x + (6 + y) = 81 Remove parenthesis around (6 + y) -2 + 2x + 6 + y = 81 Reorder the terms: -2 + 6 + 2x + y = 81 Combine like terms: -2 + 6 = 4 4 + 2x + y = 81 Solving 4 + 2x + y = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + 2x + -4 + y = 81 + -4 Reorder the terms: 4 + -4 + 2x + y = 81 + -4 Combine like terms: 4 + -4 = 0 0 + 2x + y = 81 + -4 2x + y = 81 + -4 Combine like terms: 81 + -4 = 77 2x + y = 77 Add '-1y' to each side of the equation. 2x + y + -1y = 77 + -1y Combine like terms: y + -1y = 0 2x + 0 = 77 + -1y 2x = 77 + -1y Divide each side by '2'. x = 38.5 + -0.5y Simplifying x = 38.5 + -0.5y
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