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Simplifying 2x2 + w + -21 = 0 Reorder the terms: -21 + w + 2x2 = 0 Solving -21 + w + 2x2 = 0 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '21' to each side of the equation. -21 + w + 21 + 2x2 = 0 + 21 Reorder the terms: -21 + 21 + w + 2x2 = 0 + 21 Combine like terms: -21 + 21 = 0 0 + w + 2x2 = 0 + 21 w + 2x2 = 0 + 21 Combine like terms: 0 + 21 = 21 w + 2x2 = 21 Add '-2x2' to each side of the equation. w + 2x2 + -2x2 = 21 + -2x2 Combine like terms: 2x2 + -2x2 = 0 w + 0 = 21 + -2x2 w = 21 + -2x2 Simplifying w = 21 + -2x2
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