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Simplifying 7x + 5x + 20 + 2y = 180 Reorder the terms: 20 + 7x + 5x + 2y = 180 Combine like terms: 7x + 5x = 12x 20 + 12x + 2y = 180 Solving 20 + 12x + 2y = 180 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + 12x + -20 + 2y = 180 + -20 Reorder the terms: 20 + -20 + 12x + 2y = 180 + -20 Combine like terms: 20 + -20 = 0 0 + 12x + 2y = 180 + -20 12x + 2y = 180 + -20 Combine like terms: 180 + -20 = 160 12x + 2y = 160 Add '-2y' to each side of the equation. 12x + 2y + -2y = 160 + -2y Combine like terms: 2y + -2y = 0 12x + 0 = 160 + -2y 12x = 160 + -2y Divide each side by '12'. x = 13.33333333 + -0.1666666667y Simplifying x = 13.33333333 + -0.1666666667y
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