-(u-9)+1=4

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Solution for -(u-9)+1=4 equation: 


Simplifying
-1(u + -9) + 1 = 4

Reorder the terms:
-1(-9 + u) + 1 = 4
(-9 * -1 + u * -1) + 1 = 4
(9 + -1u) + 1 = 4

Reorder the terms:
9 + 1 + -1u = 4

Combine like terms: 9 + 1 = 10
10 + -1u = 4

Solving
10 + -1u = 4

Solving for variable 'u'.

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

Add '-10' to each side of the equation.
10 + -10 + -1u = 4 + -10

Combine like terms: 10 + -10 = 0
0 + -1u = 4 + -10
-1u = 4 + -10

Combine like terms: 4 + -10 = -6
-1u = -6

Divide each side by '-1'.
u = 6

Simplifying
u = 6

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