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Simplifying -3(7x + 8) = -21x + 24 Reorder the terms: -3(8 + 7x) = -21x + 24 (8 * -3 + 7x * -3) = -21x + 24 (-24 + -21x) = -21x + 24 Reorder the terms: -24 + -21x = 24 + -21x Add '21x' to each side of the equation. -24 + -21x + 21x = 24 + -21x + 21x Combine like terms: -21x + 21x = 0 -24 + 0 = 24 + -21x + 21x -24 = 24 + -21x + 21x Combine like terms: -21x + 21x = 0 -24 = 24 + 0 -24 = 24 Solving -24 = 24 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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