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问题: 解方程


解方程组
1/x+1/(x+1)+1/(x+2)+1/(x+3)+1/(x+4)=137/60

解答:

解方程组
1/x+1/(x+1)+1/(x+2)+1/(x+3)+1/(x+4)=137/60

简解 因为5/x>137/60;5/(x+4)<137/60
所以-248/137<x<300/137.