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Simplifying 3x + 15 = 3x + -3 Reorder the terms: 15 + 3x = 3x + -3 Reorder the terms: 15 + 3x = -3 + 3x Add '-3x' to each side of the equation. 15 + 3x + -3x = -3 + 3x + -3x Combine like terms: 3x + -3x = 0 15 + 0 = -3 + 3x + -3x 15 = -3 + 3x + -3x Combine like terms: 3x + -3x = 0 15 = -3 + 0 15 = -3 Solving 15 = -3 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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