解方程:2/(y²+4y+3)+4/(y²+2y-3)=5/(y²-1)

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解方程:2/(y²+4y+3)+4/(y²+2y-3)=5/(y²-1)

解方程:2/(y²+4y+3)+4/(y²+2y-3)=5/(y²-1)
解方程:2/(y²+4y+3)+4/(y²+2y-3)=5/(y²-1)

解方程:2/(y²+4y+3)+4/(y²+2y-3)=5/(y²-1)
2/(y+1)(y+3)+4/(y+3)(y-1)=5/(y+1)(y-1)
两边乘(y+1)(y+3)(y-1)
2y-2+4y+4=5y+15
y=13
经检验,y=13是方程的解