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

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


Simplifying
0 = (3x2 + -4x + -4y) + (x2 + -2y + -2) + (-4x2 + x + -1y + -7)

Reorder the terms:
0 = (-4x + 3x2 + -4y) + (x2 + -2y + -2) + (-4x2 + x + -1y + -7)

Remove parenthesis around (-4x + 3x2 + -4y)
0 = -4x + 3x2 + -4y + (x2 + -2y + -2) + (-4x2 + x + -1y + -7)

Reorder the terms:
0 = -4x + 3x2 + -4y + (-2 + x2 + -2y) + (-4x2 + x + -1y + -7)

Remove parenthesis around (-2 + x2 + -2y)
0 = -4x + 3x2 + -4y + -2 + x2 + -2y + (-4x2 + x + -1y + -7)

Reorder the terms:
0 = -4x + 3x2 + -4y + -2 + x2 + -2y + (-7 + x + -4x2 + -1y)

Remove parenthesis around (-7 + x + -4x2 + -1y)
0 = -4x + 3x2 + -4y + -2 + x2 + -2y + -7 + x + -4x2 + -1y

Reorder the terms:
0 = -2 + -7 + -4x + x + 3x2 + x2 + -4x2 + -4y + -2y + -1y

Combine like terms: -2 + -7 = -9
0 = -9 + -4x + x + 3x2 + x2 + -4x2 + -4y + -2y + -1y

Combine like terms: -4x + x = -3x
0 = -9 + -3x + 3x2 + x2 + -4x2 + -4y + -2y + -1y

Combine like terms: 3x2 + x2 = 4x2
0 = -9 + -3x + 4x2 + -4x2 + -4y + -2y + -1y

Combine like terms: 4x2 + -4x2 = 0
0 = -9 + -3x + 0 + -4y + -2y + -1y
0 = -9 + -3x + -4y + -2y + -1y

Combine like terms: -4y + -2y = -6y
0 = -9 + -3x + -6y + -1y

Combine like terms: -6y + -1y = -7y
0 = -9 + -3x + -7y

Solving
0 = -9 + -3x + -7y

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
0 + 3x = -9 + -3x + 3x + -7y
Remove the zero:
3x = -9 + -3x + 3x + -7y

Combine like terms: -3x + 3x = 0
3x = -9 + 0 + -7y
3x = -9 + -7y

Divide each side by '3'.
x = -3 + -2.333333333y

Simplifying
x = -3 + -2.333333333y

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