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Simplifying 2(2x + 3) = 21 + 4x Reorder the terms: 2(3 + 2x) = 21 + 4x (3 * 2 + 2x * 2) = 21 + 4x (6 + 4x) = 21 + 4x Add '-4x' to each side of the equation. 6 + 4x + -4x = 21 + 4x + -4x Combine like terms: 4x + -4x = 0 6 + 0 = 21 + 4x + -4x 6 = 21 + 4x + -4x Combine like terms: 4x + -4x = 0 6 = 21 + 0 6 = 21 Solving 6 = 21 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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