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Simplifying 20 + 12x = 55 + 5x Solving 20 + 12x = 55 + 5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5x' to each side of the equation. 20 + 12x + -5x = 55 + 5x + -5x Combine like terms: 12x + -5x = 7x 20 + 7x = 55 + 5x + -5x Combine like terms: 5x + -5x = 0 20 + 7x = 55 + 0 20 + 7x = 55 Add '-20' to each side of the equation. 20 + -20 + 7x = 55 + -20 Combine like terms: 20 + -20 = 0 0 + 7x = 55 + -20 7x = 55 + -20 Combine like terms: 55 + -20 = 35 7x = 35 Divide each side by '7'. x = 5 Simplifying x = 5
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