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.31=(399.337-X)/X
We move all terms to the left:
.31-((399.337-X)/X)=0
Domain of the equation: X)!=0We add all the numbers together, and all the variables
X!=0/1
X!=0
X∈R
-((-1X+399.337)/X)+.31=0
We add all the numbers together, and all the variables
-((-1X+399.337)/X)+0.31=0
We multiply all the terms by the denominator
-((-1X+399.337)+(0.31)*X)=0
We calculate terms in parentheses: -((-1X+399.337)+(0.31)*X), so:We get rid of parentheses
(-1X+399.337)+(0.31)*X
We multiply parentheses
(-1X+399.337)+0.31X
We get rid of parentheses
-1X+0.31X+399.337
We add all the numbers together, and all the variables
-0.69X+399.337
Back to the equation:
-(-0.69X+399.337)
0.69X-399.337=0
We move all terms containing X to the left, all other terms to the right
0.69X=399.337
X=399.337/0.69
X=578+0.517/0.69
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