(X+2)分之(X+1)-(X+7)分之1=(X+3)分之(X+2)-(X+6)分之1

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(X+2)分之(X+1)-(X+7)分之1=(X+3)分之(X+2)-(X+6)分之1
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(X+2)分之(X+1)-(X+7)分之1=(X+3)分之(X+2)-(X+6)分之1
(X+2)分之(X+1)-(X+7)分之1=(X+3)分之(X+2)-(X+6)分之1

(X+2)分之(X+1)-(X+7)分之1=(X+3)分之(X+2)-(X+6)分之1
用matlab求解
(x+1)/(x+2)-1/(x+7)-(x+2)/(x+3)+1/(x+6)=0
(x+1)/(x+2)-1/(x+7)-(x+2)/(x+3)+1/(x+6)=0
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Error:The expression to the left of the equals sign is not a valid target for an
assignment.

。。。。这个无解吧~~~

先移项,=(X+3)分之(X+2)-(X+2)分之(X+1)=(X+6)分之1-(X+7)分之1
然后等号两边分别统分,变为(x+3)(x+2)=(x+6)(x+7)
解得x=-4.5