学校运来2/3吨煤,用去1/4吨后,又用去余下的4/5。又用去了多少吨?1e2f;T8\(g4G8L2s/c:\2p/B5f6a
:k(K5m.r*i/F4\1e2f;T8\(g4G8L2s/c:\2p/B5f6a
答:又用去了*y*}-D:A/i吨。1e2f;T8\(g4G8L2s/c:\2p/B5f6a