2(u+9)=-18

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Solution for 2(u+9)=-18 equation: 


Simplifying
2(u + 9) = -18

Reorder the terms:
2(9 + u) = -18
(9 * 2 + u * 2) = -18
(18 + 2u) = -18

Solving
18 + 2u = -18

Solving for variable 'u'.

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

Add '-18' to each side of the equation.
18 + -18 + 2u = -18 + -18

Combine like terms: 18 + -18 = 0
0 + 2u = -18 + -18
2u = -18 + -18

Combine like terms: -18 + -18 = -36
2u = -36

Divide each side by '2'.
u = -18

Simplifying
u = -18

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