(-7u^2+9)-(-11u^2)=

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Solution for (-7u^2+9)-(-11u^2)= equation:


Simplifying
(-7u2 + 9) + -1(-11u2) = 0

Reorder the terms:
(9 + -7u2) + -1(-11u2) = 0

Remove parenthesis around (9 + -7u2)
9 + -7u2 + -1(-11u2) = 0

Remove parenthesis around (-11u2)
9 + -7u2 + -1 * -11u2 = 0

Multiply -1 * -11
9 + -7u2 + 11u2 = 0

Combine like terms: -7u2 + 11u2 = 4u2
9 + 4u2 = 0

Solving
9 + 4u2 = 0

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-9' to each side of the equation.
9 + -9 + 4u2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 4u2 = 0 + -9
4u2 = 0 + -9

Combine like terms: 0 + -9 = -9
4u2 = -9

Divide each side by '4'.
u2 = -2.25

Simplifying
u2 = -2.25

Reorder the terms:
2.25 + u2 = -2.25 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
2.25 + u2 = 0.00

The solution to this equation could not be determined.

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