(5v+7)(4+v)=0

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Solution for (5v+7)(4+v)=0 equation: 


Simplifying
(5v + 7)(4 + v) = 0

Reorder the terms:
(7 + 5v)(4 + v) = 0

Multiply (7 + 5v) * (4 + v)
(7(4 + v) + 5v * (4 + v)) = 0
((4 * 7 + v * 7) + 5v * (4 + v)) = 0
((28 + 7v) + 5v * (4 + v)) = 0
(28 + 7v + (4 * 5v + v * 5v)) = 0
(28 + 7v + (20v + 5v2)) = 0

Combine like terms: 7v + 20v = 27v
(28 + 27v + 5v2) = 0

Solving
28 + 27v + 5v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(4 + v)(7 + 5v) = 0


Subproblem 1
Set the factor '(4 + v)' equal to zero and attempt to solve:

Simplifying
4 + v = 0

Solving
4 + v = 0

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

Add '-4' to each side of the equation.
4 + -4 + v = 0 + -4

Combine like terms: 4 + -4 = 0
0 + v = 0 + -4
v = 0 + -4

Combine like terms: 0 + -4 = -4
v = -4

Simplifying
v = -4

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 = {-4, -1.4}

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