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Simplifying -7v + -21 = 7(v + 1) Reorder the terms: -21 + -7v = 7(v + 1) Reorder the terms: -21 + -7v = 7(1 + v) -21 + -7v = (1 * 7 + v * 7) -21 + -7v = (7 + 7v) Solving -21 + -7v = 7 + 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. -21 + -7v + -7v = 7 + 7v + -7v Combine like terms: -7v + -7v = -14v -21 + -14v = 7 + 7v + -7v Combine like terms: 7v + -7v = 0 -21 + -14v = 7 + 0 -21 + -14v = 7 Add '21' to each side of the equation. -21 + 21 + -14v = 7 + 21 Combine like terms: -21 + 21 = 0 0 + -14v = 7 + 21 -14v = 7 + 21 Combine like terms: 7 + 21 = 28 -14v = 28 Divide each side by '-14'. v = -2 Simplifying v = -2
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