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2/3x=400
We move all terms to the left:
2/3x-(400)=0
Domain of the equation: 3x!=0We multiply all the terms by the denominator
x!=0/3
x!=0
x∈R
-400*3x+2=0
Wy multiply elements
-1200x+2=0
We move all terms containing x to the left, all other terms to the right
-1200x=-2
x=-2/-1200
x=1/600
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