-5/7u=15

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Solution for -5/7u=15 equation: 



-5/7u=15

We move all terms to the left:

-5/7u-(15)=0



Domain of the equation: 7u!=0

u!=0/7

u!=0

u∈R



We multiply all the terms by the denominator


-15*7u-5=0

Wy multiply elements

-105u-5=0

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

-105u=5

u=5/-105

u=-1/21

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