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9/10x=90
We move all terms to the left:
9/10x-(90)=0
Domain of the equation: 10x!=0We multiply all the terms by the denominator
x!=0/10
x!=0
x∈R
-90*10x+9=0
Wy multiply elements
-900x+9=0
We move all terms containing x to the left, all other terms to the right
-900x=-9
x=-9/-900
x=1/100
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