20u-u+2u-18u=18

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Solution for 20u-u+2u-18u=18 equation: 


Simplifying
20u + -1u + 2u + -18u = 18

Combine like terms: 20u + -1u = 19u
19u + 2u + -18u = 18

Combine like terms: 19u + 2u = 21u
21u + -18u = 18

Combine like terms: 21u + -18u = 3u
3u = 18

Solving
3u = 18

Solving for variable 'u'.

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

Divide each side by '3'.
u = 6

Simplifying
u = 6

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