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Simplifying 30 + -20v = v + 21 Reorder the terms: 30 + -20v = 21 + v Solving 30 + -20v = 21 + v Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '-1v' to each side of the equation. 30 + -20v + -1v = 21 + v + -1v Combine like terms: -20v + -1v = -21v 30 + -21v = 21 + v + -1v Combine like terms: v + -1v = 0 30 + -21v = 21 + 0 30 + -21v = 21 Add '-30' to each side of the equation. 30 + -30 + -21v = 21 + -30 Combine like terms: 30 + -30 = 0 0 + -21v = 21 + -30 -21v = 21 + -30 Combine like terms: 21 + -30 = -9 -21v = -9 Divide each side by '-21'. v = 0.4285714286 Simplifying v = 0.4285714286
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