8=3u-u

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Solution for 8=3u-u equation:


Simplifying
8 = 3u + -1u

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

Solving
8 = 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.
8 + -2u = 2u + -2u

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

Add '-8' to each side of the equation.
8 + -8 + -2u = 0 + -8

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

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

Divide each side by '-2'.
u = 4

Simplifying
u = 4

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