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Simplifying 3x + 40 = x Reorder the terms: 40 + 3x = x Solving 40 + 3x = x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 40 + 3x + -1x = x + -1x Combine like terms: 3x + -1x = 2x 40 + 2x = x + -1x Combine like terms: x + -1x = 0 40 + 2x = 0 Add '-40' to each side of the equation. 40 + -40 + 2x = 0 + -40 Combine like terms: 40 + -40 = 0 0 + 2x = 0 + -40 2x = 0 + -40 Combine like terms: 0 + -40 = -40 2x = -40 Divide each side by '2'. x = -20 Simplifying x = -20
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