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7/2x=9
We move all terms to the left:
7/2x-(9)=0
Domain of the equation: 2x!=0We multiply all the terms by the denominator
x!=0/2
x!=0
x∈R
-9*2x+7=0
Wy multiply elements
-18x+7=0
We move all terms containing x to the left, all other terms to the right
-18x=-7
x=-7/-18
x=7/18
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