u=2u-20

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Solution for u=2u-20 equation: 


Simplifying
u = 2u + -20

Reorder the terms:
u = -20 + 2u

Solving
u = -20 + 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.
u + -2u = -20 + 2u + -2u

Combine like terms: u + -2u = -1u
-1u = -20 + 2u + -2u

Combine like terms: 2u + -2u = 0
-1u = -20 + 0
-1u = -20

Divide each side by '-1'.
u = 20

Simplifying
u = 20

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