(0.3x^4+0.4x^2+7.5)-(3.9x^4+2.2x-5.1)=

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Solution for (0.3x^4+0.4x^2+7.5)-(3.9x^4+2.2x-5.1)= equation: 


Simplifying
(0.3x4 + 0.4x2 + 7.5) + -1(3.9x4 + 2.2x + -5.1) = 0

Reorder the terms:
(7.5 + 0.4x2 + 0.3x4) + -1(3.9x4 + 2.2x + -5.1) = 0

Remove parenthesis around (7.5 + 0.4x2 + 0.3x4)
7.5 + 0.4x2 + 0.3x4 + -1(3.9x4 + 2.2x + -5.1) = 0

Reorder the terms:
7.5 + 0.4x2 + 0.3x4 + -1(-5.1 + 2.2x + 3.9x4) = 0
7.5 + 0.4x2 + 0.3x4 + (-5.1 * -1 + 2.2x * -1 + 3.9x4 * -1) = 0
7.5 + 0.4x2 + 0.3x4 + (5.1 + -2.2x + -3.9x4) = 0

Reorder the terms:
7.5 + 5.1 + -2.2x + 0.4x2 + 0.3x4 + -3.9x4 = 0

Combine like terms: 7.5 + 5.1 = 12.6
12.6 + -2.2x + 0.4x2 + 0.3x4 + -3.9x4 = 0

Combine like terms: 0.3x4 + -3.9x4 = -3.6x4
12.6 + -2.2x + 0.4x2 + -3.6x4 = 0

Solving
12.6 + -2.2x + 0.4x2 + -3.6x4 = 0

Solving for variable 'x'.

The solution to this equation could not be determined.

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