(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 = 34v
(-7 + 34v + 5v2) = 0

Solving
-7 + 34v + 5v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(-7 + -1v)(1 + -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 '(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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