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1/x+1/(x+20)=1/90
We move all terms to the left:
1/x+1/(x+20)-(1/90)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: (x+20)!=0We add all the numbers together, and all the variables
We move all terms containing x to the left, all other terms to the right
x!=-20
x∈R
1/x+1/(x+20)-(+1/90)=0
We get rid of parentheses
1/x+1/(x+20)-1/90=0
We calculate fractions
(-1x^2*()/(90x^2+1800x)+(90x+1800)/(90x^2+1800x)+810x/(90x^2+1800x)=0
We calculate terms in parentheses: +(-1x^2*()/(90x^2+1800x)+(90x+1800)/(90x^2+1800x)+810x/(90x^2+1800x), so:
-1x^2*()/(90x^2+1800x)+(90x+1800)/(90x^2+1800x)+810x/(90x^2+1800x
We calculate fractions
We do not support expression: x^3
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