3x+y^4=-y^8

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Solution for 3x+y^4=-y^8 equation: 


Simplifying
3x + y4 = -1y8

Solving
3x + y4 = -1y8

Solving for variable 'x'.

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

Add '-1y4' to each side of the equation.
3x + y4 + -1y4 = -1y4 + -1y8

Combine like terms: y4 + -1y4 = 0
3x + 0 = -1y4 + -1y8
3x = -1y4 + -1y8

Divide each side by '3'.
x = -0.3333333333y4 + -0.3333333333y8

Simplifying
x = -0.3333333333y4 + -0.3333333333y8

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