12=18-4u

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Solution for 12=18-4u equation:


Simplifying
12 = 18 + -4u

Solving
12 = 18 + -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.
12 + 4u = 18 + -4u + 4u

Combine like terms: -4u + 4u = 0
12 + 4u = 18 + 0
12 + 4u = 18

Add '-12' to each side of the equation.
12 + -12 + 4u = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 4u = 18 + -12
4u = 18 + -12

Combine like terms: 18 + -12 = 6
4u = 6

Divide each side by '4'.
u = 1.5

Simplifying
u = 1.5

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