5x^3-21=39

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Solution for 5x^3-21=39 equation:


Simplifying
5x3 + -21 = 39

Reorder the terms:
-21 + 5x3 = 39

Solving
-21 + 5x3 = 39

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 5x3 = 39 + 21

Combine like terms: -21 + 21 = 0
0 + 5x3 = 39 + 21
5x3 = 39 + 21

Combine like terms: 39 + 21 = 60
5x3 = 60

Divide each side by '5'.
x3 = 12

Simplifying
x3 = 12

Reorder the terms:
-12 + x3 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + x3 = 0

The solution to this equation could not be determined.

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