20/x+7=21

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Solution for 20/x+7=21 equation: 



20/x+7=21

We move all terms to the left:

20/x+7-(21)=0



Domain of the equation: x!=0

x∈R



We add all the numbers together, and all the variables

20/x-14=0

We multiply all the terms by the denominator


-14*x+20=0

We add all the numbers together, and all the variables

-14x+20=0

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

-14x=-20

x=-20/-14

x=1+3/7

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