(5v+1)(7+v)=0

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Solution for (5v+1)(7+v)=0 equation: 


Simplifying
(5v + 1)(7 + v) = 0

Reorder the terms:
(1 + 5v)(7 + v) = 0

Multiply (1 + 5v) * (7 + v)
(1(7 + v) + 5v * (7 + v)) = 0
((7 * 1 + v * 1) + 5v * (7 + v)) = 0
((7 + 1v) + 5v * (7 + v)) = 0
(7 + 1v + (7 * 5v + v * 5v)) = 0
(7 + 1v + (35v + 5v2)) = 0

Combine like terms: 1v + 35v = 36v
(7 + 36v + 5v2) = 0

Solving
7 + 36v + 5v2 = 0

Solving for variable 'v'.

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


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

Simplifying
7 + v = 0

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

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

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

Simplifying
v = -7

Subproblem 2
Set the factor '(1 + 5v)' equal to zero and attempt to solve:

Simplifying
1 + 5v = 0

Solving
1 + 5v = 0

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

Add '-1' to each side of the equation.
1 + -1 + 5v = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 5v = 0 + -1
5v = 0 + -1

Combine like terms: 0 + -1 = -1
5v = -1

Divide each side by '5'.
v = -0.2

Simplifying
v = -0.2
Solution
v = {-7, -0.2}

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