4u+-7u=9

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Solution for 4u+-7u=9 equation: 


Simplifying
4u + -7u = 9

Combine like terms: 4u + -7u = -3u
-3u = 9

Solving
-3u = 9

Solving for variable 'u'.

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

Divide each side by '-3'.
u = -3

Simplifying
u = -3

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