(1)x/(6ab²),y/(9a²bc)(2)(a-1)/(a²+2a+1),6/(a²-1)
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![(1)x/(6ab²),y/(9a²bc)(2)(a-1)/(a²+2a+1),6/(a²-1)](/uploads/image/z/3943856-56-6.jpg?t=%EF%BC%881%EF%BC%89x%2F%EF%BC%886ab%26%23178%3B%EF%BC%89%2Cy%2F%EF%BC%889a%26%23178%3Bbc%EF%BC%89%EF%BC%882%EF%BC%89%EF%BC%88a-1%EF%BC%89%2F%EF%BC%88a%26%23178%3B%2B2a%2B1%EF%BC%89%2C6%2F%EF%BC%88a%26%23178%3B-1%EF%BC%89)
(1)x/(6ab²),y/(9a²bc)(2)(a-1)/(a²+2a+1),6/(a²-1)
(1)x/(6ab²),y/(9a²bc)
(2)(a-1)/(a²+2a+1),6/(a²-1)
(1)x/(6ab²),y/(9a²bc)(2)(a-1)/(a²+2a+1),6/(a²-1)
(1)最简公分母是:18a²b²c
x/(6ab²)=3xac/18a²b²c
y/(9a²bc)=2yb/18a²b²c
(2)最简公分母是:(a+1)²(a-1)
(a-1)/(a²+2a+1)=(a-1)/(a+1)²=(a-1)²/(a+1)²(a-1)
6/(a²-1)=6/(a+1)(a-1)=6(a+1)/(a+1)²(a-1)