(x+y)dx-(3x+3y-4)dy=0

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Solution for (x+y)dx-(3x+3y-4)dy=0 equation: 


Simplifying
(x + y) * dx + -1(3x + 3y + -4) * dy = 0

Reorder the terms for easier multiplication:
dx(x + y) + -1(3x + 3y + -4) * dy = 0
(x * dx + y * dx) + -1(3x + 3y + -4) * dy = 0

Reorder the terms:
(dxy + dx2) + -1(3x + 3y + -4) * dy = 0
(dxy + dx2) + -1(3x + 3y + -4) * dy = 0

Reorder the terms:
dxy + dx2 + -1(-4 + 3x + 3y) * dy = 0

Reorder the terms for easier multiplication:
dxy + dx2 + -1dy(-4 + 3x + 3y) = 0
dxy + dx2 + (-4 * -1dy + 3x * -1dy + 3y * -1dy) = 0

Reorder the terms:
dxy + dx2 + (-3dxy + 4dy + -3dy2) = 0
dxy + dx2 + (-3dxy + 4dy + -3dy2) = 0

Reorder the terms:
dxy + -3dxy + dx2 + 4dy + -3dy2 = 0

Combine like terms: dxy + -3dxy = -2dxy
-2dxy + dx2 + 4dy + -3dy2 = 0

Solving
-2dxy + dx2 + 4dy + -3dy2 = 0

Solving for variable 'd'.

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

Factor out the Greatest Common Factor (GCF), 'd'.
d(-2xy + x2 + 4y + -3y2) = 0


Subproblem 1
Set the factor 'd' equal to zero and attempt to solve:

Simplifying
d = 0

Solving
d = 0

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

Simplifying
d = 0

Subproblem 2
Set the factor '(-2xy + x2 + 4y + -3y2)' equal to zero and attempt to solve:

Simplifying
-2xy + x2 + 4y + -3y2 = 0

Solving
-2xy + x2 + 4y + -3y2 = 0

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

Add '2xy' to each side of the equation.
-2xy + x2 + 4y + 2xy + -3y2 = 0 + 2xy

Reorder the terms:
-2xy + 2xy + x2 + 4y + -3y2 = 0 + 2xy

Combine like terms: -2xy + 2xy = 0
0 + x2 + 4y + -3y2 = 0 + 2xy
x2 + 4y + -3y2 = 0 + 2xy
Remove the zero:
x2 + 4y + -3y2 = 2xy

Add '-1x2' to each side of the equation.
x2 + 4y + -1x2 + -3y2 = 2xy + -1x2

Reorder the terms:
x2 + -1x2 + 4y + -3y2 = 2xy + -1x2

Combine like terms: x2 + -1x2 = 0
0 + 4y + -3y2 = 2xy + -1x2
4y + -3y2 = 2xy + -1x2

Add '-4y' to each side of the equation.
4y + -4y + -3y2 = 2xy + -1x2 + -4y

Combine like terms: 4y + -4y = 0
0 + -3y2 = 2xy + -1x2 + -4y
-3y2 = 2xy + -1x2 + -4y

Add '3y2' to each side of the equation.
-3y2 + 3y2 = 2xy + -1x2 + -4y + 3y2

Combine like terms: -3y2 + 3y2 = 0
0 = 2xy + -1x2 + -4y + 3y2

Simplifying
0 = 2xy + -1x2 + -4y + 3y2

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
d = {0}

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