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Simplifying (3 + w)(7 + -1w) = a Multiply (3 + w) * (7 + -1w) (3(7 + -1w) + w(7 + -1w)) = a ((7 * 3 + -1w * 3) + w(7 + -1w)) = a ((21 + -3w) + w(7 + -1w)) = a (21 + -3w + (7 * w + -1w * w)) = a (21 + -3w + (7w + -1w2)) = a Combine like terms: -3w + 7w = 4w (21 + 4w + -1w2) = a Solving 21 + 4w + -1w2 = a Solving for variable 'w'. Reorder the terms: 21 + -1a + 4w + -1w2 = a + -1a Combine like terms: a + -1a = 0 21 + -1a + 4w + -1w2 = 0 The solution to this equation could not be determined.
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