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Simplifying -2(2v + -1) = -4v + -5 + 7 Reorder the terms: -2(-1 + 2v) = -4v + -5 + 7 (-1 * -2 + 2v * -2) = -4v + -5 + 7 (2 + -4v) = -4v + -5 + 7 Reorder the terms: 2 + -4v = -5 + 7 + -4v Combine like terms: -5 + 7 = 2 2 + -4v = 2 + -4v Add '-2' to each side of the equation. 2 + -2 + -4v = 2 + -2 + -4v Combine like terms: 2 + -2 = 0 0 + -4v = 2 + -2 + -4v -4v = 2 + -2 + -4v Combine like terms: 2 + -2 = 0 -4v = 0 + -4v -4v = -4v Add '4v' to each side of the equation. -4v + 4v = -4v + 4v Combine like terms: -4v + 4v = 0 0 = -4v + 4v Combine like terms: -4v + 4v = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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