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300/15=700/x
We move all terms to the left:
300/15-(700/x)=0
Domain of the equation: x)!=0We add all the numbers together, and all the variables
x!=0/1
x!=0
x∈R
-(+700/x)+300/15=0
We add all the numbers together, and all the variables
-(+700/x)+20=0
We get rid of parentheses
-700/x+20=0
We multiply all the terms by the denominator
20*x-700=0
We add all the numbers together, and all the variables
20x-700=0
We move all terms containing x to the left, all other terms to the right
20x=700
x=700/20
x=35
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