x^3+x-a=0

Solution for x^3+x-a=0 equation:

Simplifying
x3 + x + -1a = 0

Reorder the terms:
-1a + x + x3 = 0

Solving
-1a + x + x3 = 0

Solving for variable 'a'.

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

Add '-1x' to each side of the equation.
-1a + x + -1x + x3 = 0 + -1x

Combine like terms: x + -1x = 0
-1a + 0 + x3 = 0 + -1x
-1a + x3 = 0 + -1x
Remove the zero:
-1a + x3 = -1x

Add '-1x3' to each side of the equation.
-1a + x3 + -1x3 = -1x + -1x3

Combine like terms: x3 + -1x3 = 0
-1a + 0 = -1x + -1x3
-1a = -1x + -1x3

Divide each side by '-1'.
a = x + x3

Simplifying
a = x + x3