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Simplifying 12x + 15 = 3(4x + -5) Reorder the terms: 15 + 12x = 3(4x + -5) Reorder the terms: 15 + 12x = 3(-5 + 4x) 15 + 12x = (-5 * 3 + 4x * 3) 15 + 12x = (-15 + 12x) Add '-12x' to each side of the equation. 15 + 12x + -12x = -15 + 12x + -12x Combine like terms: 12x + -12x = 0 15 + 0 = -15 + 12x + -12x 15 = -15 + 12x + -12x Combine like terms: 12x + -12x = 0 15 = -15 + 0 15 = -15 Solving 15 = -15 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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