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Recíproco de x: 1/x
1/3 reciproco de 3
x+ 1/3 = 1/x +3
(3(x)+1)/3 = (1+(3)x)/x
(3x+1)/3 = (1+3x)/x
x(3x+1)=3(1+3x)
3x²+x=3+9x
3x²+x-9x-3=0
3x²-8x-3=0
(3x+1)(x-3)=0
3x+1=0 x-3=0
3x= -1 x=3
x= -1/3 x=3
Las dos soluciones son -1/3 y 3.