12=u-18

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Solution for 12=u-18 equation:


Simplifying
12 = u + -18

Reorder the terms:
12 = -18 + u

Solving
12 = -18 + u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
12 + -1u = -18 + u + -1u

Combine like terms: u + -1u = 0
12 + -1u = -18 + 0
12 + -1u = -18

Add '-12' to each side of the equation.
12 + -12 + -1u = -18 + -12

Combine like terms: 12 + -12 = 0
0 + -1u = -18 + -12
-1u = -18 + -12

Combine like terms: -18 + -12 = -30
-1u = -30

Divide each side by '-1'.
u = 30

Simplifying
u = 30

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