300/10=1200/x

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Solution for 300/10=1200/x equation: 



300/10=1200/x

We move all terms to the left:

300/10-(1200/x)=0



Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+1200/x)+300/10=0

We add all the numbers together, and all the variables

-(+1200/x)+30=0

We get rid of parentheses

-1200/x+30=0

We multiply all the terms by the denominator


30*x-1200=0

We add all the numbers together, and all the variables

30x-1200=0

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

30x=1200

x=1200/30

x=40

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