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Simplifying 7x + 12 = 5x + 40 Reorder the terms: 12 + 7x = 5x + 40 Reorder the terms: 12 + 7x = 40 + 5x Solving 12 + 7x = 40 + 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. 12 + 7x + -5x = 40 + 5x + -5x Combine like terms: 7x + -5x = 2x 12 + 2x = 40 + 5x + -5x Combine like terms: 5x + -5x = 0 12 + 2x = 40 + 0 12 + 2x = 40 Add '-12' to each side of the equation. 12 + -12 + 2x = 40 + -12 Combine like terms: 12 + -12 = 0 0 + 2x = 40 + -12 2x = 40 + -12 Combine like terms: 40 + -12 = 28 2x = 28 Divide each side by '2'. x = 14 Simplifying x = 14
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