3=4/w+7

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Solution for 3=4/w+7 equation: 



3=4/w+7

We move all terms to the left:

3-(4/w+7)=0



Domain of the equation: w+7)!=0

w∈R



We get rid of parentheses

-4/w-7+3=0

We multiply all the terms by the denominator


-7*w+3*w-4=0

We add all the numbers together, and all the variables

-4w-4=0

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

-4w=4

w=4/-4

w=-1

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