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Simplifying 21x + 3 = 20x + 19 Reorder the terms: 3 + 21x = 20x + 19 Reorder the terms: 3 + 21x = 19 + 20x Solving 3 + 21x = 19 + 20x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20x' to each side of the equation. 3 + 21x + -20x = 19 + 20x + -20x Combine like terms: 21x + -20x = 1x 3 + 1x = 19 + 20x + -20x Combine like terms: 20x + -20x = 0 3 + 1x = 19 + 0 3 + 1x = 19 Add '-3' to each side of the equation. 3 + -3 + 1x = 19 + -3 Combine like terms: 3 + -3 = 0 0 + 1x = 19 + -3 1x = 19 + -3 Combine like terms: 19 + -3 = 16 1x = 16 Divide each side by '1'. x = 16 Simplifying x = 16
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