3=-7/8+u

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Solution for 3=-7/8+u equation: 



3=-7/8+u

We move all terms to the left:

3-(-7/8+u)=0



Domain of the equation: 8+u)!=0

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

u)!=-8

u!=-8/1

u!=-8

u∈R



We add all the numbers together, and all the variables

-(+u-7/8)+3=0

We get rid of parentheses

-u+3+7/8=0

We multiply all the terms by the denominator


-u*8+7+3*8=0

We add all the numbers together, and all the variables

-u*8+31=0

Wy multiply elements

-8u+31=0

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

-8u=-31

u=-31/-8

u=3+7/8

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