-47=9-7u

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Solution for -47=9-7u equation: 



-47=9-7u

We move all terms to the left:

-47-(9-7u)=0

We add all the numbers together, and all the variables

-(-7u+9)-47=0

We get rid of parentheses

7u-9-47=0

We add all the numbers together, and all the variables

7u-56=0

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

7u=56

u=56/7

u=8

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