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Simplifying 21 = 3 + -4v + -2 Reorder the terms: 21 = 3 + -2 + -4v Combine like terms: 3 + -2 = 1 21 = 1 + -4v Solving 21 = 1 + -4v Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '4v' to each side of the equation. 21 + 4v = 1 + -4v + 4v Combine like terms: -4v + 4v = 0 21 + 4v = 1 + 0 21 + 4v = 1 Add '-21' to each side of the equation. 21 + -21 + 4v = 1 + -21 Combine like terms: 21 + -21 = 0 0 + 4v = 1 + -21 4v = 1 + -21 Combine like terms: 1 + -21 = -20 4v = -20 Divide each side by '4'. v = -5 Simplifying v = -5
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