3x^3+21y^2+18=

Solution for 3x^3+21y^2+18= equation:

Simplifying
3x3 + 21y2 + 18 = 0

Reorder the terms:
18 + 3x3 + 21y2 = 0

Solving
18 + 3x3 + 21y2 = 0

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + 3x3 + -18 + 21y2 = 0 + -18

Reorder the terms:
18 + -18 + 3x3 + 21y2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 3x3 + 21y2 = 0 + -18
3x3 + 21y2 = 0 + -18

Combine like terms: 0 + -18 = -18
3x3 + 21y2 = -18

Add '-21y2' to each side of the equation.
3x3 + 21y2 + -21y2 = -18 + -21y2

Combine like terms: 21y2 + -21y2 = 0
3x3 + 0 = -18 + -21y2
3x3 = -18 + -21y2

Divide each side by '3'.
x3 = -6 + -7y2

Simplifying
x3 = -6 + -7y2

Reorder the terms:
6 + x3 + 7y2 = -6 + -7y2 + 6 + 7y2

Reorder the terms:
6 + x3 + 7y2 = -6 + 6 + -7y2 + 7y2

Combine like terms: -6 + 6 = 0
6 + x3 + 7y2 = 0 + -7y2 + 7y2
6 + x3 + 7y2 = -7y2 + 7y2

Combine like terms: -7y2 + 7y2 = 0
6 + x3 + 7y2 = 0

The solution to this equation could not be determined.