3u-u-1=19

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Solution for 3u-u-1=19 equation:


Simplifying
3u + -1u + -1 = 19

Reorder the terms:
-1 + 3u + -1u = 19

Combine like terms: 3u + -1u = 2u
-1 + 2u = 19

Solving
-1 + 2u = 19

Solving for variable 'u'.

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

Add '1' to each side of the equation.
-1 + 1 + 2u = 19 + 1

Combine like terms: -1 + 1 = 0
0 + 2u = 19 + 1
2u = 19 + 1

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

Divide each side by '2'.
u = 10

Simplifying
u = 10

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