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Simplifying 4(3x + 7) = 12x + 56 Reorder the terms: 4(7 + 3x) = 12x + 56 (7 * 4 + 3x * 4) = 12x + 56 (28 + 12x) = 12x + 56 Reorder the terms: 28 + 12x = 56 + 12x Add '-12x' to each side of the equation. 28 + 12x + -12x = 56 + 12x + -12x Combine like terms: 12x + -12x = 0 28 + 0 = 56 + 12x + -12x 28 = 56 + 12x + -12x Combine like terms: 12x + -12x = 0 28 = 56 + 0 28 = 56 Solving 28 = 56 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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