U-1=7-u

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Solution for U-1=7-u equation: 


Simplifying
U + -1 = 7 + -1u

Reorder the terms:
-1 + U = 7 + -1u

Solving
-1 + U = 7 + -1u

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 + U = 7 + 1 + -1u

Combine like terms: -1 + 1 = 0
0 + U = 7 + 1 + -1u
U = 7 + 1 + -1u

Combine like terms: 7 + 1 = 8
U = 8 + -1u

Simplifying
U = 8 + -1u

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