7u+2u-8u=9

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Solution for 7u+2u-8u=9 equation: 



7u+2u-8u=9

We move all terms to the left:

7u+2u-8u-(9)=0

We add all the numbers together, and all the variables

u-9=0

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

u=9

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