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Simplifying 3x + 4y + 19 = 20 Reorder the terms: 19 + 3x + 4y = 20 Solving 19 + 3x + 4y = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + 3x + -19 + 4y = 20 + -19 Reorder the terms: 19 + -19 + 3x + 4y = 20 + -19 Combine like terms: 19 + -19 = 0 0 + 3x + 4y = 20 + -19 3x + 4y = 20 + -19 Combine like terms: 20 + -19 = 1 3x + 4y = 1 Add '-4y' to each side of the equation. 3x + 4y + -4y = 1 + -4y Combine like terms: 4y + -4y = 0 3x + 0 = 1 + -4y 3x = 1 + -4y Divide each side by '3'. x = 0.3333333333 + -1.333333333y Simplifying x = 0.3333333333 + -1.333333333y
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