-1u+20=11

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Solution for -1u+20=11 equation: 


Simplifying
-1u + 20 = 11

Reorder the terms:
20 + -1u = 11

Solving
20 + -1u = 11

Solving for variable 'u'.

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

Add '-20' to each side of the equation.
20 + -20 + -1u = 11 + -20

Combine like terms: 20 + -20 = 0
0 + -1u = 11 + -20
-1u = 11 + -20

Combine like terms: 11 + -20 = -9
-1u = -9

Divide each side by '-1'.
u = 9

Simplifying
u = 9

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