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Simplifying 3x + 9x + -5 = 3(4x + 4) Reorder the terms: -5 + 3x + 9x = 3(4x + 4) Combine like terms: 3x + 9x = 12x -5 + 12x = 3(4x + 4) Reorder the terms: -5 + 12x = 3(4 + 4x) -5 + 12x = (4 * 3 + 4x * 3) -5 + 12x = (12 + 12x) Add '-12x' to each side of the equation. -5 + 12x + -12x = 12 + 12x + -12x Combine like terms: 12x + -12x = 0 -5 + 0 = 12 + 12x + -12x -5 = 12 + 12x + -12x Combine like terms: 12x + -12x = 0 -5 = 12 + 0 -5 = 12 Solving -5 = 12 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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