12=7u+9

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Solution for 12=7u+9 equation:


Simplifying
12 = 7u + 9

Reorder the terms:
12 = 9 + 7u

Solving
12 = 9 + 7u

Solving for variable 'u'.

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

Add '-7u' to each side of the equation.
12 + -7u = 9 + 7u + -7u

Combine like terms: 7u + -7u = 0
12 + -7u = 9 + 0
12 + -7u = 9

Add '-12' to each side of the equation.
12 + -12 + -7u = 9 + -12

Combine like terms: 12 + -12 = 0
0 + -7u = 9 + -12
-7u = 9 + -12

Combine like terms: 9 + -12 = -3
-7u = -3

Divide each side by '-7'.
u = 0.4285714286

Simplifying
u = 0.4285714286

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