(-8x^2-2y+7)-(-x^2-7y+3)=

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Solution for (-8x^2-2y+7)-(-x^2-7y+3)= equation: 


Simplifying
(-8x2 + -2y + 7) + -1(-1x2 + -7y + 3) = 0

Reorder the terms:
(7 + -8x2 + -2y) + -1(-1x2 + -7y + 3) = 0

Remove parenthesis around (7 + -8x2 + -2y)
7 + -8x2 + -2y + -1(-1x2 + -7y + 3) = 0

Reorder the terms:
7 + -8x2 + -2y + -1(3 + -1x2 + -7y) = 0
7 + -8x2 + -2y + (3 * -1 + -1x2 * -1 + -7y * -1) = 0
7 + -8x2 + -2y + (-3 + 1x2 + 7y) = 0

Reorder the terms:
7 + -3 + -8x2 + 1x2 + -2y + 7y = 0

Combine like terms: 7 + -3 = 4
4 + -8x2 + 1x2 + -2y + 7y = 0

Combine like terms: -8x2 + 1x2 = -7x2
4 + -7x2 + -2y + 7y = 0

Combine like terms: -2y + 7y = 5y
4 + -7x2 + 5y = 0

Solving
4 + -7x2 + 5y = 0

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -7x2 + -4 + 5y = 0 + -4

Reorder the terms:
4 + -4 + -7x2 + 5y = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -7x2 + 5y = 0 + -4
-7x2 + 5y = 0 + -4

Combine like terms: 0 + -4 = -4
-7x2 + 5y = -4

Add '-5y' to each side of the equation.
-7x2 + 5y + -5y = -4 + -5y

Combine like terms: 5y + -5y = 0
-7x2 + 0 = -4 + -5y
-7x2 = -4 + -5y

Divide each side by '-7'.
x2 = 0.5714285714 + 0.7142857143y

Simplifying
x2 = 0.5714285714 + 0.7142857143y

Reorder the terms:
-0.5714285714 + x2 + -0.7142857143y = 0.5714285714 + 0.7142857143y + -0.5714285714 + -0.7142857143y

Reorder the terms:
-0.5714285714 + x2 + -0.7142857143y = 0.5714285714 + -0.5714285714 + 0.7142857143y + -0.7142857143y

Combine like terms: 0.5714285714 + -0.5714285714 = 0.0000000000
-0.5714285714 + x2 + -0.7142857143y = 0.0000000000 + 0.7142857143y + -0.7142857143y
-0.5714285714 + x2 + -0.7142857143y = 0.7142857143y + -0.7142857143y

Combine like terms: 0.7142857143y + -0.7142857143y = 0.0000000000
-0.5714285714 + x2 + -0.7142857143y = 0.0000000000

The solution to this equation could not be determined.

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