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-4/20x=18
We move all terms to the left:
-4/20x-(18)=0
Domain of the equation: 20x!=0We multiply all the terms by the denominator
x!=0/20
x!=0
x∈R
-18*20x-4=0
Wy multiply elements
-360x-4=0
We move all terms containing x to the left, all other terms to the right
-360x=4
x=4/-360
x=-1/90
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