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Simplifying 20x + -12 = 21 + -3x Reorder the terms: -12 + 20x = 21 + -3x Solving -12 + 20x = 21 + -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. -12 + 20x + 3x = 21 + -3x + 3x Combine like terms: 20x + 3x = 23x -12 + 23x = 21 + -3x + 3x Combine like terms: -3x + 3x = 0 -12 + 23x = 21 + 0 -12 + 23x = 21 Add '12' to each side of the equation. -12 + 12 + 23x = 21 + 12 Combine like terms: -12 + 12 = 0 0 + 23x = 21 + 12 23x = 21 + 12 Combine like terms: 21 + 12 = 33 23x = 33 Divide each side by '23'. x = 1.434782609 Simplifying x = 1.434782609
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