18=-9u

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Solution for 18=-9u equation:


Simplifying
18 = -9u

Solving
18 = -9u

Solving for variable 'u'.

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

Add '9u' to each side of the equation.
18 + 9u = -9u + 9u

Combine like terms: -9u + 9u = 0
18 + 9u = 0

Add '-18' to each side of the equation.
18 + -18 + 9u = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 9u = 0 + -18
9u = 0 + -18

Combine like terms: 0 + -18 = -18
9u = -18

Divide each side by '9'.
u = -2

Simplifying
u = -2

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