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Simplifying 4x + -12 + -1x = 3(x + -1) + -15 Reorder the terms: -12 + 4x + -1x = 3(x + -1) + -15 Combine like terms: 4x + -1x = 3x -12 + 3x = 3(x + -1) + -15 Reorder the terms: -12 + 3x = 3(-1 + x) + -15 -12 + 3x = (-1 * 3 + x * 3) + -15 -12 + 3x = (-3 + 3x) + -15 Reorder the terms: -12 + 3x = -3 + -15 + 3x Combine like terms: -3 + -15 = -18 -12 + 3x = -18 + 3x Add '-3x' to each side of the equation. -12 + 3x + -3x = -18 + 3x + -3x Combine like terms: 3x + -3x = 0 -12 + 0 = -18 + 3x + -3x -12 = -18 + 3x + -3x Combine like terms: 3x + -3x = 0 -12 = -18 + 0 -12 = -18 Solving -12 = -18 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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