(3+w)(7-w)=a

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Solution for (3+w)(7-w)=a equation:


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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