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Simplifying 21 + 2.5v = 4v Solving 21 + 2.5v = 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 + 2.5v + -4v = 4v + -4v Combine like terms: 2.5v + -4v = -1.5v 21 + -1.5v = 4v + -4v Combine like terms: 4v + -4v = 0 21 + -1.5v = 0 Add '-21' to each side of the equation. 21 + -21 + -1.5v = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -1.5v = 0 + -21 -1.5v = 0 + -21 Combine like terms: 0 + -21 = -21 -1.5v = -21 Divide each side by '-1.5'. v = 14 Simplifying v = 14
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