-1=8-3u

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Solution for -1=8-3u equation:


Simplifying
-1 = 8 + -3u

Solving
-1 = 8 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
-1 + 3u = 8 + -3u + 3u

Combine like terms: -3u + 3u = 0
-1 + 3u = 8 + 0
-1 + 3u = 8

Add '1' to each side of the equation.
-1 + 1 + 3u = 8 + 1

Combine like terms: -1 + 1 = 0
0 + 3u = 8 + 1
3u = 8 + 1

Combine like terms: 8 + 1 = 9
3u = 9

Divide each side by '3'.
u = 3

Simplifying
u = 3

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