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Simplifying 18w + -21 = 15w + 13 Reorder the terms: -21 + 18w = 15w + 13 Reorder the terms: -21 + 18w = 13 + 15w Solving -21 + 18w = 13 + 15w Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-15w' to each side of the equation. -21 + 18w + -15w = 13 + 15w + -15w Combine like terms: 18w + -15w = 3w -21 + 3w = 13 + 15w + -15w Combine like terms: 15w + -15w = 0 -21 + 3w = 13 + 0 -21 + 3w = 13 Add '21' to each side of the equation. -21 + 21 + 3w = 13 + 21 Combine like terms: -21 + 21 = 0 0 + 3w = 13 + 21 3w = 13 + 21 Combine like terms: 13 + 21 = 34 3w = 34 Divide each side by '3'. w = 11.33333333 Simplifying w = 11.33333333
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