-1-9u=-u-9

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Solution for -1-9u=-u-9 equation:


Simplifying
-1 + -9u = -1u + -9

Reorder the terms:
-1 + -9u = -9 + -1u

Solving
-1 + -9u = -9 + -1u

Solving for variable 'u'.

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

Add 'u' to each side of the equation.
-1 + -9u + u = -9 + -1u + u

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

Combine like terms: -1u + u = 0
-1 + -8u = -9 + 0
-1 + -8u = -9

Add '1' to each side of the equation.
-1 + 1 + -8u = -9 + 1

Combine like terms: -1 + 1 = 0
0 + -8u = -9 + 1
-8u = -9 + 1

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

Divide each side by '-8'.
u = 1

Simplifying
u = 1

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