9=u+9

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Solution for 9=u+9 equation:


Simplifying
9 = u + 9

Reorder the terms:
9 = 9 + u

Add '-9' to each side of the equation.
9 + -9 = 9 + -9 + u

Combine like terms: 9 + -9 = 0
0 = 9 + -9 + u

Combine like terms: 9 + -9 = 0
0 = 0 + u
0 = u

Solving
0 = u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
0 + -1u = u + -1u
Remove the zero:
-1u = u + -1u

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

Divide each side by '-1'.
u = 0

Simplifying
u = 0

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