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5x/x-3+4/x+3=90/x2-9
We move all terms to the left:
5x/x-3+4/x+3-(90/x2-9)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: x2-9)!=0We add all the numbers together, and all the variables
x∈R
5x/x+4/x-(90/x2-9)=0
We get rid of parentheses
5x/x+4/x-90/x2+9=0
We calculate fractions
We do not support expression: x^3
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