9-7u=72

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Solution for 9-7u=72 equation: 



9-7u=72

We move all terms to the left:

9-7u-(72)=0

We add all the numbers together, and all the variables

-7u-63=0

We move all terms containing u to the left, all other terms to the right

-7u=63

u=63/-7

u=-9

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