鹅重7.8千克,比鸡的3倍还多0.3千克。鸡重多少千克?:H;a,F6C5u6D:h9_)Q2v8P
算式:提示(B'x;z9E:`7[:H;a,F6C5u6D:h9_)Q2v8P
答:鸡重*m.G/P:N,f.[/T千克:H;a,F6C5u6D:h9_)Q2v8P