(2x+4y)(7x+3y)=

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Solution for (2x+4y)(7x+3y)= equation: 


Simplifying
(2x + 4y)(7x + 3y) = 0

Multiply (2x + 4y) * (7x + 3y)
(2x * (7x + 3y) + 4y * (7x + 3y)) = 0
((7x * 2x + 3y * 2x) + 4y * (7x + 3y)) = 0

Reorder the terms:
((6xy + 14x2) + 4y * (7x + 3y)) = 0
((6xy + 14x2) + 4y * (7x + 3y)) = 0
(6xy + 14x2 + (7x * 4y + 3y * 4y)) = 0
(6xy + 14x2 + (28xy + 12y2)) = 0

Reorder the terms:
(6xy + 28xy + 14x2 + 12y2) = 0

Combine like terms: 6xy + 28xy = 34xy
(34xy + 14x2 + 12y2) = 0

Solving
34xy + 14x2 + 12y2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(17xy + 7x2 + 6y2) = 0

Factor a trinomial.
2((7x + 3y)(x + 2y)) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(7x + 3y)' equal to zero and attempt to solve:

Simplifying
7x + 3y = 0

Solving
7x + 3y = 0

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

Add '-3y' to each side of the equation.
7x + 3y + -3y = 0 + -3y

Combine like terms: 3y + -3y = 0
7x + 0 = 0 + -3y
7x = 0 + -3y
Remove the zero:
7x = -3y

Divide each side by '7'.
x = -0.4285714286y

Simplifying
x = -0.4285714286y

Subproblem 2
Set the factor '(x + 2y)' equal to zero and attempt to solve:

Simplifying
x + 2y = 0

Solving
x + 2y = 0

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

Add '-2y' to each side of the equation.
x + 2y + -2y = 0 + -2y

Combine like terms: 2y + -2y = 0
x + 0 = 0 + -2y
x = 0 + -2y
Remove the zero:
x = -2y

Simplifying
x = -2y
Solution
x = {-0.4285714286y, -2y}

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