(-3)/(u+4)=-7

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Solution for (-3)/(u+4)=-7 equation: 



(-3)/(u+4)=-7

We move all terms to the left:

(-3)/(u+4)-(-7)=0



Domain of the equation: (u+4)!=0

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

u!=-4

u∈R



We add all the numbers together, and all the variables

(-3)/(u+4)+7=0

We multiply all the terms by the denominator


7*(u+4)+(-3)=0

We add all the numbers together, and all the variables

7*(u+4)-3=0

We multiply parentheses

7u+28-3=0

We add all the numbers together, and all the variables

7u+25=0

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

7u=-25

u=-25/7

u=-3+4/7

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