12u-9=4u

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Solution for 12u-9=4u equation:


Simplifying
12u + -9 = 4u

Reorder the terms:
-9 + 12u = 4u

Solving
-9 + 12u = 4u

Solving for variable 'u'.

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

Add '-4u' to each side of the equation.
-9 + 12u + -4u = 4u + -4u

Combine like terms: 12u + -4u = 8u
-9 + 8u = 4u + -4u

Combine like terms: 4u + -4u = 0
-9 + 8u = 0

Add '9' to each side of the equation.
-9 + 9 + 8u = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 8u = 0 + 9
8u = 0 + 9

Combine like terms: 0 + 9 = 9
8u = 9

Divide each side by '8'.
u = 1.125

Simplifying
u = 1.125

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