(7-a)dx+x^2dy=0

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Solution for (7-a)dx+x^2dy=0 equation:


Simplifying
(7 + -1a) * dx + x2dy = 0

Reorder the terms for easier multiplication:
dx(7 + -1a) + x2dy = 0
(7 * dx + -1a * dx) + x2dy = 0

Reorder the terms:
(-1adx + 7dx) + x2dy = 0
(-1adx + 7dx) + x2dy = 0

Solving
-1adx + 7dx + dx2y = 0

Solving for variable 'a'.

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

Add '-7dx' to each side of the equation.
-1adx + 7dx + -7dx + dx2y = 0 + -7dx

Combine like terms: 7dx + -7dx = 0
-1adx + 0 + dx2y = 0 + -7dx
-1adx + dx2y = 0 + -7dx
Remove the zero:
-1adx + dx2y = -7dx

Add '-1dx2y' to each side of the equation.
-1adx + dx2y + -1dx2y = -7dx + -1dx2y

Combine like terms: dx2y + -1dx2y = 0
-1adx + 0 = -7dx + -1dx2y
-1adx = -7dx + -1dx2y

Divide each side by '-1dx'.
a = 7 + xy

Simplifying
a = 7 + xy

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