12-12u=9u+45

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Solution for 12-12u=9u+45 equation: 


Simplifying
12 + -12u = 9u + 45

Reorder the terms:
12 + -12u = 45 + 9u

Solving
12 + -12u = 45 + 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.
12 + -12u + -9u = 45 + 9u + -9u

Combine like terms: -12u + -9u = -21u
12 + -21u = 45 + 9u + -9u

Combine like terms: 9u + -9u = 0
12 + -21u = 45 + 0
12 + -21u = 45

Add '-12' to each side of the equation.
12 + -12 + -21u = 45 + -12

Combine like terms: 12 + -12 = 0
0 + -21u = 45 + -12
-21u = 45 + -12

Combine like terms: 45 + -12 = 33
-21u = 33

Divide each side by '-21'.
u = -1.571428571

Simplifying
u = -1.571428571

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