12=-3/7(u)

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Solution for 12=-3/7(u) equation: 



12=-3/7(u)

We move all terms to the left:

12-(-3/7(u))=0



Domain of the equation: 7u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

3/7u+12=0

We multiply all the terms by the denominator


12*7u+3=0

Wy multiply elements

84u+3=0

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

84u=-3

u=-3/84

u=-1/28

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