9u-7u=20

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Solution for 9u-7u=20 equation: 


Simplifying
9u + -7u = 20

Combine like terms: 9u + -7u = 2u
2u = 20

Solving
2u = 20

Solving for variable 'u'.

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

Divide each side by '2'.
u = 10

Simplifying
u = 10

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