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Simplifying 3(x + -3) = -6(5 + -4x) + -21x Reorder the terms: 3(-3 + x) = -6(5 + -4x) + -21x (-3 * 3 + x * 3) = -6(5 + -4x) + -21x (-9 + 3x) = -6(5 + -4x) + -21x -9 + 3x = (5 * -6 + -4x * -6) + -21x -9 + 3x = (-30 + 24x) + -21x Combine like terms: 24x + -21x = 3x -9 + 3x = -30 + 3x Add '-3x' to each side of the equation. -9 + 3x + -3x = -30 + 3x + -3x Combine like terms: 3x + -3x = 0 -9 + 0 = -30 + 3x + -3x -9 = -30 + 3x + -3x Combine like terms: 3x + -3x = 0 -9 = -30 + 0 -9 = -30 Solving -9 = -30 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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