12=-8/7u

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Solution for 12=-8/7u equation: 



12=-8/7u

We move all terms to the left:

12-(-8/7u)=0



Domain of the equation: 7u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

8/7u+12=0

We multiply all the terms by the denominator


12*7u+8=0

Wy multiply elements

84u+8=0

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

84u=-8

u=-8/84

u=-2/21

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