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+2/5Y=4
We move all terms to the left:
+2/5Y-(4)=0
Domain of the equation: 5Y!=0We multiply all the terms by the denominator
Y!=0/5
Y!=0
Y∈R
-4*5Y+2=0
Wy multiply elements
-20Y+2=0
We move all terms containing Y to the left, all other terms to the right
-20Y=-2
Y=-2/-20
Y=1/10
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