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Simplifying 2w = 21 + -1w Solving 2w = 21 + -1w Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add 'w' to each side of the equation. 2w + w = 21 + -1w + w Combine like terms: 2w + w = 3w 3w = 21 + -1w + w Combine like terms: -1w + w = 0 3w = 21 + 0 3w = 21 Divide each side by '3'. w = 7 Simplifying w = 7
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