y^3-4x-21x=0

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Solution for y^3-4x-21x=0 equation: 


Simplifying
y3 + -4x + -21x = 0

Reorder the terms:
-4x + -21x + y3 = 0

Combine like terms: -4x + -21x = -25x
-25x + y3 = 0

Solving
-25x + y3 = 0

Solving for variable 'x'.

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

Add '-1y3' to each side of the equation.
-25x + y3 + -1y3 = 0 + -1y3

Combine like terms: y3 + -1y3 = 0
-25x + 0 = 0 + -1y3
-25x = 0 + -1y3
Remove the zero:
-25x = -1y3

Divide each side by '-25'.
x = 0.04y3

Simplifying
x = 0.04y3

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