2u=81-7u

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Solution for 2u=81-7u equation: 


Simplifying
2u = 81 + -7u

Solving
2u = 81 + -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.
2u + 7u = 81 + -7u + 7u

Combine like terms: 2u + 7u = 9u
9u = 81 + -7u + 7u

Combine like terms: -7u + 7u = 0
9u = 81 + 0
9u = 81

Divide each side by '9'.
u = 9

Simplifying
u = 9

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