(-5m^2+9n^2-4n)-(-4m+9m^2+5n+-5n^2)=

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Solution for (-5m^2+9n^2-4n)-(-4m+9m^2+5n+-5n^2)= equation: 


Simplifying
(-5m2 + 9n2 + -4n) + -1(-4m + 9m2 + 5n + -5n2) = 0

Reorder the terms:
(-5m2 + -4n + 9n2) + -1(-4m + 9m2 + 5n + -5n2) = 0

Remove parenthesis around (-5m2 + -4n + 9n2)
-5m2 + -4n + 9n2 + -1(-4m + 9m2 + 5n + -5n2) = 0
-5m2 + -4n + 9n2 + (-4m * -1 + 9m2 * -1 + 5n * -1 + -5n2 * -1) = 0
-5m2 + -4n + 9n2 + (4m + -9m2 + -5n + 5n2) = 0

Reorder the terms:
4m + -5m2 + -9m2 + -4n + -5n + 9n2 + 5n2 = 0

Combine like terms: -5m2 + -9m2 = -14m2
4m + -14m2 + -4n + -5n + 9n2 + 5n2 = 0

Combine like terms: -4n + -5n = -9n
4m + -14m2 + -9n + 9n2 + 5n2 = 0

Combine like terms: 9n2 + 5n2 = 14n2
4m + -14m2 + -9n + 14n2 = 0

Solving
4m + -14m2 + -9n + 14n2 = 0

Solving for variable 'm'.

The solution to this equation could not be determined.

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