5u-21u=2u

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Solution for 5u-21u=2u equation: 


Simplifying
5u + -21u = 2u

Combine like terms: 5u + -21u = -16u
-16u = 2u

Solving
-16u = 2u

Solving for variable 'u'.

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

Add '-2u' to each side of the equation.
-16u + -2u = 2u + -2u

Combine like terms: -16u + -2u = -18u
-18u = 2u + -2u

Combine like terms: 2u + -2u = 0
-18u = 0

Divide each side by '-18'.
u = 0

Simplifying
u = 0

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