9=12+7u+7

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Solution for 9=12+7u+7 equation:


Simplifying
9 = 12 + 7u + 7

Reorder the terms:
9 = 12 + 7 + 7u

Combine like terms: 12 + 7 = 19
9 = 19 + 7u

Solving
9 = 19 + 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.
9 + -7u = 19 + 7u + -7u

Combine like terms: 7u + -7u = 0
9 + -7u = 19 + 0
9 + -7u = 19

Add '-9' to each side of the equation.
9 + -9 + -7u = 19 + -9

Combine like terms: 9 + -9 = 0
0 + -7u = 19 + -9
-7u = 19 + -9

Combine like terms: 19 + -9 = 10
-7u = 10

Divide each side by '-7'.
u = -1.428571429

Simplifying
u = -1.428571429

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