9u-13u=-16

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Solution for 9u-13u=-16 equation: 


Simplifying
9u + -13u = -16

Combine like terms: 9u + -13u = -4u
-4u = -16

Solving
-4u = -16

Solving for variable 'u'.

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

Divide each side by '-4'.
u = 4

Simplifying
u = 4

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