9u+3u-9u-u-2=8

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Solution for 9u+3u-9u-u-2=8 equation:


Simplifying
9u + 3u + -9u + -1u + -2 = 8

Reorder the terms:
-2 + 9u + 3u + -9u + -1u = 8

Combine like terms: 9u + 3u = 12u
-2 + 12u + -9u + -1u = 8

Combine like terms: 12u + -9u = 3u
-2 + 3u + -1u = 8

Combine like terms: 3u + -1u = 2u
-2 + 2u = 8

Solving
-2 + 2u = 8

Solving for variable 'u'.

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

Add '2' to each side of the equation.
-2 + 2 + 2u = 8 + 2

Combine like terms: -2 + 2 = 0
0 + 2u = 8 + 2
2u = 8 + 2

Combine like terms: 8 + 2 = 10
2u = 10

Divide each side by '2'.
u = 5

Simplifying
u = 5

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