(9+w)(5w+7)=0

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Solution for (9+w)(5w+7)=0 equation: 


Simplifying
(9 + w)(5w + 7) = 0

Reorder the terms:
(9 + w)(7 + 5w) = 0

Multiply (9 + w) * (7 + 5w)
(9(7 + 5w) + w(7 + 5w)) = 0
((7 * 9 + 5w * 9) + w(7 + 5w)) = 0
((63 + 45w) + w(7 + 5w)) = 0
(63 + 45w + (7 * w + 5w * w)) = 0
(63 + 45w + (7w + 5w2)) = 0

Combine like terms: 45w + 7w = 52w
(63 + 52w + 5w2) = 0

Solving
63 + 52w + 5w2 = 0

Solving for variable 'w'.

Factor a trinomial.
(9 + w)(7 + 5w) = 0


Subproblem 1
Set the factor '(9 + w)' equal to zero and attempt to solve:

Simplifying
9 + w = 0

Solving
9 + w = 0

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

Add '-9' to each side of the equation.
9 + -9 + w = 0 + -9

Combine like terms: 9 + -9 = 0
0 + w = 0 + -9
w = 0 + -9

Combine like terms: 0 + -9 = -9
w = -9

Simplifying
w = -9

Subproblem 2
Set the factor '(7 + 5w)' equal to zero and attempt to solve:

Simplifying
7 + 5w = 0

Solving
7 + 5w = 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 + 5w = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 5w = 0 + -7
5w = 0 + -7

Combine like terms: 0 + -7 = -7
5w = -7

Divide each side by '5'.
w = -1.4

Simplifying
w = -1.4
Solution
w = {-9, -1.4}

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