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9/20x=3
We move all terms to the left:
9/20x-(3)=0
Domain of the equation: 20x!=0We multiply all the terms by the denominator
x!=0/20
x!=0
x∈R
-3*20x+9=0
Wy multiply elements
-60x+9=0
We move all terms containing x to the left, all other terms to the right
-60x=-9
x=-9/-60
x=3/20
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