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Simplifying 3x + 1(x + -4) = 4x + 7 Reorder the terms: 3x + 1(-4 + x) = 4x + 7 3x + (-4 * 1 + x * 1) = 4x + 7 3x + (-4 + 1x) = 4x + 7 Reorder the terms: -4 + 3x + 1x = 4x + 7 Combine like terms: 3x + 1x = 4x -4 + 4x = 4x + 7 Reorder the terms: -4 + 4x = 7 + 4x Add '-4x' to each side of the equation. -4 + 4x + -4x = 7 + 4x + -4x Combine like terms: 4x + -4x = 0 -4 + 0 = 7 + 4x + -4x -4 = 7 + 4x + -4x Combine like terms: 4x + -4x = 0 -4 = 7 + 0 -4 = 7 Solving -4 = 7 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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