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Simplifying -81 = 6v + -13v + -18 Reorder the terms: -81 = -18 + 6v + -13v Combine like terms: 6v + -13v = -7v -81 = -18 + -7v Solving -81 = -18 + -7v Solving for variable 'v'. Move all terms containing v to the left, all other terms to the right. Add '7v' to each side of the equation. -81 + 7v = -18 + -7v + 7v Combine like terms: -7v + 7v = 0 -81 + 7v = -18 + 0 -81 + 7v = -18 Add '81' to each side of the equation. -81 + 81 + 7v = -18 + 81 Combine like terms: -81 + 81 = 0 0 + 7v = -18 + 81 7v = -18 + 81 Combine like terms: -18 + 81 = 63 7v = 63 Divide each side by '7'. v = 9 Simplifying v = 9
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