滴水式
春芽
共回答了16个问题采纳率:100% 举报
:(1)1/(x-1)=3x/3x(x-1),2/3x=2(x-1)/3x(x-1),
(2)3/(x-2)=9/[3(x-2)],2/(6-3x)=-2/3(x-2)
(3)1/(x+1)(x-4)=(x-4)/(x+1)(x-4)²
2/(x-4)^2=2(x+1)/(x+1)(x-4)²
1年前
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滴水式
(4)x/3(y-1)=2x/6(y-1), 2/(6-6y)=-2/6(y-1) (5)1/(x-1)(x-2)=(x-1)/(x-1)²(x-2), 2/(x^2-2x+1)=2/(x-1)²=2(x-2)/(x-1)²(x-2)