(5v-9)(7+v)=0

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


Simplifying
(5v + -9)(7 + v) = 0

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

Multiply (-9 + 5v) * (7 + v)
(-9(7 + v) + 5v * (7 + v)) = 0
((7 * -9 + v * -9) + 5v * (7 + v)) = 0
((-63 + -9v) + 5v * (7 + v)) = 0
(-63 + -9v + (7 * 5v + v * 5v)) = 0
(-63 + -9v + (35v + 5v2)) = 0

Combine like terms: -9v + 35v = 26v
(-63 + 26v + 5v2) = 0

Solving
-63 + 26v + 5v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(-7 + -1v)(9 + -5v) = 0


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

Simplifying
-7 + -1v = 0

Solving
-7 + -1v = 0

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

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

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

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

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

Simplifying
v = -7

Subproblem 2
Set the factor '(9 + -5v)' equal to zero and attempt to solve:

Simplifying
9 + -5v = 0

Solving
9 + -5v = 0

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

Add '-9' to each side of the equation.
9 + -9 + -5v = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -5v = 0 + -9
-5v = 0 + -9

Combine like terms: 0 + -9 = -9
-5v = -9

Divide each side by '-5'.
v = 1.8

Simplifying
v = 1.8
Solution
v = {-7, 1.8}

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