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Simplifying -21 = 7 + 4v Solving -21 = 7 + 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 = 7 + 4v + -4v Combine like terms: 4v + -4v = 0 -21 + -4v = 7 + 0 -21 + -4v = 7 Add '21' to each side of the equation. -21 + 21 + -4v = 7 + 21 Combine like terms: -21 + 21 = 0 0 + -4v = 7 + 21 -4v = 7 + 21 Combine like terms: 7 + 21 = 28 -4v = 28 Divide each side by '-4'. v = -7 Simplifying v = -7
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