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0.4/x=2.5
We move all terms to the left:
0.4/x-(2.5)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
0.4/x-2.5=0
We multiply all the terms by the denominator
-(2.5)*x+0.4=0
We multiply parentheses
-2.5x+0.4=0
We move all terms containing x to the left, all other terms to the right
-2.5x=-0.4
x=-0.4/-2.5
x=0.4/2.5
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