-u/9=-20

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Solution for -u/9=-20 equation: 



-u/9=-20

We move all terms to the left:

-u/9-(-20)=0

We add all the numbers together, and all the variables

-u/9+20=0

We multiply all the terms by the denominator


-u+20*9=0

We add all the numbers together, and all the variables

-1u+180=0

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

-u=-180

u=-180/-1

u=+180

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