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