(7u^3-u^2-7)+(2u^3-4u^2)=

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Solution for (7u^3-u^2-7)+(2u^3-4u^2)= equation: 


Simplifying
(7u3 + -1u2 + -7) + (2u3 + -4u2) = 0

Reorder the terms:
(-7 + -1u2 + 7u3) + (2u3 + -4u2) = 0

Remove parenthesis around (-7 + -1u2 + 7u3)
-7 + -1u2 + 7u3 + (2u3 + -4u2) = 0

Reorder the terms:
-7 + -1u2 + 7u3 + (-4u2 + 2u3) = 0

Remove parenthesis around (-4u2 + 2u3)
-7 + -1u2 + 7u3 + -4u2 + 2u3 = 0

Reorder the terms:
-7 + -1u2 + -4u2 + 7u3 + 2u3 = 0

Combine like terms: -1u2 + -4u2 = -5u2
-7 + -5u2 + 7u3 + 2u3 = 0

Combine like terms: 7u3 + 2u3 = 9u3
-7 + -5u2 + 9u3 = 0

Solving
-7 + -5u2 + 9u3 = 0

Solving for variable 'u'.

The solution to this equation could not be determined.

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