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Simplifying 45x + 20y = 80findy Solving 45x + 20y = 80dfiny Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20y' to each side of the equation. 45x + 20y + -20y = 80dfiny + -20y Combine like terms: 20y + -20y = 0 45x + 0 = 80dfiny + -20y 45x = 80dfiny + -20y Divide each side by '45'. x = 1.777777778dfiny + -0.4444444444y Simplifying x = 1.777777778dfiny + -0.4444444444y
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