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4/5x=500
We move all terms to the left:
4/5x-(500)=0
Domain of the equation: 5x!=0We multiply all the terms by the denominator
x!=0/5
x!=0
x∈R
-500*5x+4=0
Wy multiply elements
-2500x+4=0
We move all terms containing x to the left, all other terms to the right
-2500x=-4
x=-4/-2500
x=1/625
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