(7x^3-15x^2-9)-(3x^3+5x+15)=

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Solution for (7x^3-15x^2-9)-(3x^3+5x+15)= equation: 


Simplifying
(7x3 + -15x2 + -9) + -1(3x3 + 5x + 15) = 0

Reorder the terms:
(-9 + -15x2 + 7x3) + -1(3x3 + 5x + 15) = 0

Remove parenthesis around (-9 + -15x2 + 7x3)
-9 + -15x2 + 7x3 + -1(3x3 + 5x + 15) = 0

Reorder the terms:
-9 + -15x2 + 7x3 + -1(15 + 5x + 3x3) = 0
-9 + -15x2 + 7x3 + (15 * -1 + 5x * -1 + 3x3 * -1) = 0
-9 + -15x2 + 7x3 + (-15 + -5x + -3x3) = 0

Reorder the terms:
-9 + -15 + -5x + -15x2 + 7x3 + -3x3 = 0

Combine like terms: -9 + -15 = -24
-24 + -5x + -15x2 + 7x3 + -3x3 = 0

Combine like terms: 7x3 + -3x3 = 4x3
-24 + -5x + -15x2 + 4x3 = 0

Solving
-24 + -5x + -15x2 + 4x3 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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