-18=-3/7u

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Solution for -18=-3/7u equation: 



-18=-3/7u

We move all terms to the left:

-18-(-3/7u)=0



Domain of the equation: 7u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

3/7u-18=0

We multiply all the terms by the denominator


-18*7u+3=0

Wy multiply elements

-126u+3=0

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

-126u=-3

u=-3/-126

u=1/42

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