-12=6u+18-9u

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Solution for -12=6u+18-9u equation:


Simplifying
-12 = 6u + 18 + -9u

Reorder the terms:
-12 = 18 + 6u + -9u

Combine like terms: 6u + -9u = -3u
-12 = 18 + -3u

Solving
-12 = 18 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
-12 + 3u = 18 + -3u + 3u

Combine like terms: -3u + 3u = 0
-12 + 3u = 18 + 0
-12 + 3u = 18

Add '12' to each side of the equation.
-12 + 12 + 3u = 18 + 12

Combine like terms: -12 + 12 = 0
0 + 3u = 18 + 12
3u = 18 + 12

Combine like terms: 18 + 12 = 30
3u = 30

Divide each side by '3'.
u = 10

Simplifying
u = 10

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