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

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


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

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

Multiply (9 + v) * (-7 + 5v)
(9(-7 + 5v) + v(-7 + 5v)) = 0
((-7 * 9 + 5v * 9) + v(-7 + 5v)) = 0
((-63 + 45v) + v(-7 + 5v)) = 0
(-63 + 45v + (-7 * v + 5v * v)) = 0
(-63 + 45v + (-7v + 5v2)) = 0

Combine like terms: 45v + -7v = 38v
(-63 + 38v + 5v2) = 0

Solving
-63 + 38v + 5v2 = 0

Solving for variable 'v'.

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


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

Simplifying
-9 + -1v = 0

Solving
-9 + -1v = 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 + -1v = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -1v = 0 + 9
-1v = 0 + 9

Combine like terms: 0 + 9 = 9
-1v = 9

Divide each side by '-1'.
v = -9

Simplifying
v = -9

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

Simplifying
7 + -5v = 0

Solving
7 + -5v = 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 + -5v = 0 + -7

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

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

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

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

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