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Simplifying 4(2x + 3) = x + -12 + 7x Reorder the terms: 4(3 + 2x) = x + -12 + 7x (3 * 4 + 2x * 4) = x + -12 + 7x (12 + 8x) = x + -12 + 7x Reorder the terms: 12 + 8x = -12 + x + 7x Combine like terms: x + 7x = 8x 12 + 8x = -12 + 8x Add '-8x' to each side of the equation. 12 + 8x + -8x = -12 + 8x + -8x Combine like terms: 8x + -8x = 0 12 + 0 = -12 + 8x + -8x 12 = -12 + 8x + -8x Combine like terms: 8x + -8x = 0 12 = -12 + 0 12 = -12 Solving 12 = -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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