3(x^2+4y^2)-4(-x^2-10y^2)-3(x+y)=

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Solution for 3(x^2+4y^2)-4(-x^2-10y^2)-3(x+y)= equation: 


Simplifying
3(x2 + 4y2) + -4(-1x2 + -10y2) + -3(x + y) = 0
(x2 * 3 + 4y2 * 3) + -4(-1x2 + -10y2) + -3(x + y) = 0
(3x2 + 12y2) + -4(-1x2 + -10y2) + -3(x + y) = 0
3x2 + 12y2 + (-1x2 * -4 + -10y2 * -4) + -3(x + y) = 0
3x2 + 12y2 + (4x2 + 40y2) + -3(x + y) = 0
3x2 + 12y2 + 4x2 + 40y2 + (x * -3 + y * -3) = 0
3x2 + 12y2 + 4x2 + 40y2 + (-3x + -3y) = 0

Reorder the terms:
-3x + 3x2 + 4x2 + -3y + 12y2 + 40y2 = 0

Combine like terms: 3x2 + 4x2 = 7x2
-3x + 7x2 + -3y + 12y2 + 40y2 = 0

Combine like terms: 12y2 + 40y2 = 52y2
-3x + 7x2 + -3y + 52y2 = 0

Solving
-3x + 7x2 + -3y + 52y2 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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