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Simplifying 3x + 40 = x + -15 Reorder the terms: 40 + 3x = x + -15 Reorder the terms: 40 + 3x = -15 + x Solving 40 + 3x = -15 + 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 = -15 + x + -1x Combine like terms: 3x + -1x = 2x 40 + 2x = -15 + x + -1x Combine like terms: x + -1x = 0 40 + 2x = -15 + 0 40 + 2x = -15 Add '-40' to each side of the equation. 40 + -40 + 2x = -15 + -40 Combine like terms: 40 + -40 = 0 0 + 2x = -15 + -40 2x = -15 + -40 Combine like terms: -15 + -40 = -55 2x = -55 Divide each side by '2'. x = -27.5 Simplifying x = -27.5
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