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21/x-4=6
We move all terms to the left:
21/x-4-(6)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
21/x-10=0
We multiply all the terms by the denominator
-10*x+21=0
We add all the numbers together, and all the variables
-10x+21=0
We move all terms containing x to the left, all other terms to the right
-10x=-21
x=-21/-10
x=2+1/10
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