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8/(5x)=6.4
We move all terms to the left:
8/(5x)-(6.4)=0
Domain of the equation: 5x!=0We add all the numbers together, and all the variables
x!=0/5
x!=0
x∈R
8/5x-6.4=0
We multiply all the terms by the denominator
-(6.4)*5x+8=0
We multiply parentheses
-32x+8=0
We move all terms containing x to the left, all other terms to the right
-32x=-8
x=-8/-32
x=1/4
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