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Simplifying 3x + 7 = 3(x + 4) Reorder the terms: 7 + 3x = 3(x + 4) Reorder the terms: 7 + 3x = 3(4 + x) 7 + 3x = (4 * 3 + x * 3) 7 + 3x = (12 + 3x) Add '-3x' to each side of the equation. 7 + 3x + -3x = 12 + 3x + -3x Combine like terms: 3x + -3x = 0 7 + 0 = 12 + 3x + -3x 7 = 12 + 3x + -3x Combine like terms: 3x + -3x = 0 7 = 12 + 0 7 = 12 Solving 7 = 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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