(3w-8)(7+w)=0

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Solution for (3w-8)(7+w)=0 equation: 


Simplifying
(3w + -8)(7 + w) = 0

Reorder the terms:
(-8 + 3w)(7 + w) = 0

Multiply (-8 + 3w) * (7 + w)
(-8(7 + w) + 3w * (7 + w)) = 0
((7 * -8 + w * -8) + 3w * (7 + w)) = 0
((-56 + -8w) + 3w * (7 + w)) = 0
(-56 + -8w + (7 * 3w + w * 3w)) = 0
(-56 + -8w + (21w + 3w2)) = 0

Combine like terms: -8w + 21w = 13w
(-56 + 13w + 3w2) = 0

Solving
-56 + 13w + 3w2 = 0

Solving for variable 'w'.

Factor a trinomial.
(-7 + -1w)(8 + -3w) = 0


Subproblem 1
Set the factor '(-7 + -1w)' equal to zero and attempt to solve:

Simplifying
-7 + -1w = 0

Solving
-7 + -1w = 0

Move all terms containing w to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + -1w = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -1w = 0 + 7
-1w = 0 + 7

Combine like terms: 0 + 7 = 7
-1w = 7

Divide each side by '-1'.
w = -7

Simplifying
w = -7

Subproblem 2
Set the factor '(8 + -3w)' equal to zero and attempt to solve:

Simplifying
8 + -3w = 0

Solving
8 + -3w = 0

Move all terms containing w to the left, all other terms to the right.

Add '-8' to each side of the equation.
8 + -8 + -3w = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -3w = 0 + -8
-3w = 0 + -8

Combine like terms: 0 + -8 = -8
-3w = -8

Divide each side by '-3'.
w = 2.666666667

Simplifying
w = 2.666666667
Solution
w = {-7, 2.666666667}

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