(-7m^2+8n^2-9n)-[(8m^2-9m+2n)+(-8m^2)+4n^2]=

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Solution for (-7m^2+8n^2-9n)-[(8m^2-9m+2n)+(-8m^2)+4n^2]= equation: 


Simplifying
(-7m2 + 8n2 + -9n) + -1[(8m2 + -9m + 2n) + (-8m2) + 4n2] = 0

Reorder the terms:
(-7m2 + -9n + 8n2) + -1[(8m2 + -9m + 2n) + (-8m2) + 4n2] = 0

Remove parenthesis around (-7m2 + -9n + 8n2)
-7m2 + -9n + 8n2 + -1[(8m2 + -9m + 2n) + (-8m2) + 4n2] = 0

Reorder the terms:
-7m2 + -9n + 8n2 + -1[(-9m + 8m2 + 2n) + (-8m2) + 4n2] = 0

Remove parenthesis around (-9m + 8m2 + 2n)
-7m2 + -9n + 8n2 + -1[-9m + 8m2 + 2n + (-8m2) + 4n2] = 0

Reorder the terms:
-7m2 + -9n + 8n2 + -1[-9m + 8m2 + (-8m2) + 2n + 4n2] = 0

Combine like terms: 8m2 + (-8m2) = 0
-7m2 + -9n + 8n2 + -1[-9m + 0 + 2n + 4n2] = 0
-7m2 + -9n + 8n2 + -1[-9m + 2n + 4n2] = 0
-7m2 + -9n + 8n2 + [-9m * -1 + 2n * -1 + 4n2 * -1] = 0
-7m2 + -9n + 8n2 + [9m + -2n + -4n2] = 0

Reorder the terms:
9m + -7m2 + -9n + -2n + 8n2 + -4n2 = 0

Combine like terms: -9n + -2n = -11n
9m + -7m2 + -11n + 8n2 + -4n2 = 0

Combine like terms: 8n2 + -4n2 = 4n2
9m + -7m2 + -11n + 4n2 = 0

Solving
9m + -7m2 + -11n + 4n2 = 0

Solving for variable 'm'.

The solution to this equation could not be determined.

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