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21/4x=9-
We move all terms to the left:
21/4x-(9-)=0
Domain of the equation: 4x!=0We add all the numbers together, and all the variables
x!=0/4
x!=0
x∈R
21/4x-0=0
We add all the numbers together, and all the variables
21/4x=0
We multiply all the terms by the denominator
21!=0
There is no solution for this equation
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