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Simplifying 4x + -9 = 7(x + 4) + -3x Reorder the terms: -9 + 4x = 7(x + 4) + -3x Reorder the terms: -9 + 4x = 7(4 + x) + -3x -9 + 4x = (4 * 7 + x * 7) + -3x -9 + 4x = (28 + 7x) + -3x Combine like terms: 7x + -3x = 4x -9 + 4x = 28 + 4x Add '-4x' to each side of the equation. -9 + 4x + -4x = 28 + 4x + -4x Combine like terms: 4x + -4x = 0 -9 + 0 = 28 + 4x + -4x -9 = 28 + 4x + -4x Combine like terms: 4x + -4x = 0 -9 = 28 + 0 -9 = 28 Solving -9 = 28 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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