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Simplifying (x + -20) * 2 + (y + -0.05) * 2 = 81 Reorder the terms: (-20 + x) * 2 + (y + -0.05) * 2 = 81 Reorder the terms for easier multiplication: 2(-20 + x) + (y + -0.05) * 2 = 81 (-20 * 2 + x * 2) + (y + -0.05) * 2 = 81 (-40 + 2x) + (y + -0.05) * 2 = 81 Reorder the terms: -40 + 2x + (-0.05 + y) * 2 = 81 Reorder the terms for easier multiplication: -40 + 2x + 2(-0.05 + y) = 81 -40 + 2x + (-0.05 * 2 + y * 2) = 81 -40 + 2x + (-0.1 + 2y) = 81 Reorder the terms: -40 + -0.1 + 2x + 2y = 81 Combine like terms: -40 + -0.1 = -40.1 -40.1 + 2x + 2y = 81 Solving -40.1 + 2x + 2y = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40.1' to each side of the equation. -40.1 + 2x + 40.1 + 2y = 81 + 40.1 Reorder the terms: -40.1 + 40.1 + 2x + 2y = 81 + 40.1 Combine like terms: -40.1 + 40.1 = 0.0 0.0 + 2x + 2y = 81 + 40.1 2x + 2y = 81 + 40.1 Combine like terms: 81 + 40.1 = 121.1 2x + 2y = 121.1 Add '-2y' to each side of the equation. 2x + 2y + -2y = 121.1 + -2y Combine like terms: 2y + -2y = 0 2x + 0 = 121.1 + -2y 2x = 121.1 + -2y Divide each side by '2'. x = 60.55 + -1y Simplifying x = 60.55 + -1y
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