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Simplifying 7(v + 3) + -3v = 2(2v + 4) + -9 Reorder the terms: 7(3 + v) + -3v = 2(2v + 4) + -9 (3 * 7 + v * 7) + -3v = 2(2v + 4) + -9 (21 + 7v) + -3v = 2(2v + 4) + -9 Combine like terms: 7v + -3v = 4v 21 + 4v = 2(2v + 4) + -9 Reorder the terms: 21 + 4v = 2(4 + 2v) + -9 21 + 4v = (4 * 2 + 2v * 2) + -9 21 + 4v = (8 + 4v) + -9 Reorder the terms: 21 + 4v = 8 + -9 + 4v Combine like terms: 8 + -9 = -1 21 + 4v = -1 + 4v Add '-4v' to each side of the equation. 21 + 4v + -4v = -1 + 4v + -4v Combine like terms: 4v + -4v = 0 21 + 0 = -1 + 4v + -4v 21 = -1 + 4v + -4v Combine like terms: 4v + -4v = 0 21 = -1 + 0 21 = -1 Solving 21 = -1 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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