11u-4u=21

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Solution for 11u-4u=21 equation: 


Simplifying
11u + -4u = 21

Combine like terms: 11u + -4u = 7u
7u = 21

Solving
7u = 21

Solving for variable 'u'.

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

Divide each side by '7'.
u = 3

Simplifying
u = 3

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