-9(9+u)-2u=-10

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Solution for -9(9+u)-2u=-10 equation: 


Simplifying
-9(9 + u) + -2u = -10
(9 * -9 + u * -9) + -2u = -10
(-81 + -9u) + -2u = -10

Combine like terms: -9u + -2u = -11u
-81 + -11u = -10

Solving
-81 + -11u = -10

Solving for variable 'u'.

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

Add '81' to each side of the equation.
-81 + 81 + -11u = -10 + 81

Combine like terms: -81 + 81 = 0
0 + -11u = -10 + 81
-11u = -10 + 81

Combine like terms: -10 + 81 = 71
-11u = 71

Divide each side by '-11'.
u = -6.454545455

Simplifying
u = -6.454545455

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